detect

Word family  noun detection detective adjective detectable ≠ indetectible verb detect

 Longman Dictionary of Contemporary English 5++朗文当代英语 5++LDOCE 5++朗文 5++de·tect /dɪˈtekt/ ●●○ W3 AWL verb [transitive]  NOTICEto notice or discover something, especially something that is not easy to see, hear etc 发现，察觉〔尤指不易觉察到的事物〕 Many forms of cancer can be cured if detected early. 如果发现得早，许多种癌症都可以治愈。difficult/impossible/easy/possible etc to detect 很难/不可能/容易/可能等被发现detect a change/difference Dan detected a change in her mood. 丹觉察出她的情绪有变化。detect a note of sarcasm/irony/excitement etc Do I detect a note of sarcasm in your voice? 我怎么听出来你语气里带有讽刺意味呢？► see thesaurus at notice —detectable adjective→ See Verb table

Examples from the Corpus

detect• Not all such turncoats are detected.• Of Hearst the man, Nasaw's careful portrait suggests greater vulnerability and sensitivity than most others have detected.• Constance detected a change in the atmosphere as Giancarlo excused himself and walked down the steps to greet his last guest.• Marlowe detected a faint smell of perfume as he entered the room.• Do I detect a note of sarcasm in your voice?• She wasn't moving or responding, but he detected a slow heartbeat.• The motion is detected by the gauge and translated into a pressure.• The system is so sensitive that it can detect changes in temperature as small as 0.003 degrees.• The effect is always there, but you'd never detect it.• Though the yellow tomatoes are pretty, I couldn't detect much difference in flavor.• Frequent measurements of visual fields and acuity are obtained to detect optic nerve damage.difficult/impossible/easy/possible etc to detect• Front running is not always easy to detect.• Most are modern, quiet, diesel-electric submarines, which can be difficult to detect.• Richards acknowledged that some forgery techniques are virtually impossible to detect.• Thallium was an Alfa Romeo among poisons, its charm being the fact that it was almost impossible to detect.• The SeHCAT test has made intestinal bile acid malabsorption much more easy to detect.• Additions and embellishments can be more difficult to detect, and here of course the cooperation of the art historian is essential.• In most cases, it is difficult to detect that some one is eavesdropping.• Metaphors have side effects, although sometimes it is difficult to detect them until they have had a considerable influence upon us.Origin detect (1400-1500) Latin detectus, past participle of detegere “to uncover”

de·tect verbChineseSyllable  

discover especially to something something, that notice or Corpus

detect
de‧tect W3 AC /dɪˈtekt/ verb [transitive]to notice or discover something, especially something that is not easy to see, hear etc:
    Many forms of cancer can be cured if detected early.
    difficult/impossible/easy/possible etc to detect
    detect a change/difference
    Dan detected a change in her mood.
    detect a note of sarcasm/irony/excitement etc
    Do I detect a note of sarcasm in your voice?
—detectable adjective
     

THESAURUS

   ▪ notice to realize that something is there or that something is happening, because you can see, hear, or feel it: I noticed that he was rather quiet during dinner. | Children don’t seem to notice the cold. | ‘Julie’s home.’ ‘Yes, I noticed her bicycle outside.’
   ▪ detect to notice something that is difficult to see, hear etc because it is very small, faint, or unclear. Detect is used about people and machines, and is more formal than notice: X-ray telescopes can now detect virtually every type of astronomical object. | He thought he detected a flicker of interest in her eyes.
   ▪ spot to notice something, especially something that is difficult to see or that you see for a short time only. Spot is more informal than notice: Can you spot the difference between these two pictures? | I’m glad you spotted the mistake before it was too late.
   ▪ become aware/conscious to gradually begin to notice that something is happening or is true: I became aware that Mum was getting a lot older. | Tessa became conscious of a feeling of guilt.
   ▪ can tell to be able to notice something because you can see, smell, hear it etc: I could tell that she had been drinking. | Can you tell I've lost weight?
   ▪ something/somebody catches your eye used to say that you suddenly notice something or someone because they are interesting, attractive, or good at something: I saw this shirt in the shop window and it just caught my eye. | Clarke caught the eye of boss Bryan Robson when he scored for Newry last week.
   ▪ observe formal to notice something as a result of watching or studying it closely: Psychologists observed that the mice became more aggressive in smaller cages.
   ▪ perceive formal to notice something, especially that something is happening, or is true, or needs to be done: The company quickly perceived the need for change. | Doctors perceive that they do not have adequate time to spend with their patients.
   ▪ witness to see something happen because you are there at the time: People have witnessed some great economic changes during the last ten years.
   ▪ miss to not notice something because it is difficult to see: It’s easy to miss the entrance – the sign is hidden behind a tree.

de·tect AW BrE /dɪˈtekt/ 🔊NAmE /dɪˈtekt/ 🔊 verbpresent simple - I / you / we / they detect BrE /dɪˈtekt/ 🔊 NAmE /dɪˈtekt/ 🔊present simple - he / she / it detects BrE /dɪˈtekts/ 🔊 NAmE /dɪˈtekts/ 🔊past simple detected BrE /dɪˈtektɪd/ 🔊 NAmE /dɪˈtektɪd/ 🔊past participle detected BrE /dɪˈtektɪd/ 🔊 NAmE /dɪˈtektɪd/ 🔊 -ing form detecting BrE /dɪˈtektɪŋ/ 🔊 NAmE /dɪˈtektɪŋ/ 🔊~ sth to discover or notice sth, especially sth that is not easy to see, hear, etc. 发现；查明；侦察出◆The tests are designed to detect the disease early. 这些检查旨在早期查出疾病。🔊🔊◆an instrument that can detect small amounts of radiation能检测微量辐射的仪器◆Do I detect a note of criticism? 这好像带有批评的意味吧？🔊🔊note ◇ detect ◇ observe ◇ witness

These words all mean to see sth, especially when you pay careful attention to it. 以上各词均含看到、注意到之义。

• notice to see, hear or become aware of sb/sth; to pay attention to sb/sth 指看（或听）到、注意到、意识到、注意、留意：◆The first thing I noticed about the room was the smell. 我首先注意到的是这屋子里的气味。
• note (rather formal) to notice or pay careful attention to sth 指注意、留意：◆Please note (that) the office will be closed on Monday. 请注意办事处星期一将关闭。 NOTE This word is very common in business English. 该词在商务英语中非常通用：◆Note that the prices are inclusive of VAT. 注意这些价格含增值税。
• detect to discover or notice sth, especially sth that is not easy to see, hear, etc. 指发现、查明、侦察出：◆The tests are designed to detect the disease early. 这些检查旨在及早查出疾病。
• observe (formal) to see or notice sb/sth 指看到、注意到、观察到：◆Have you observed any changes lately? 最近你注意到什么变化没有？◆The police observed a man enter the bank. 警察注意到一个男人走进了银行。
• witness (rather formal) to see sth happen 指当场看到、目击：◆Police have appealed for anyone who witnessed the incident to contact them. 警方呼吁目击这一事件的人与他们联系。

Patterns

• to notice/note/detect/observe that/how/what/where/who…
• to notice/observe/witness sth happen/sb do sth

▸ de·tect·able AW BrE /dɪˈtektəbl/ 🔊NAmE /dɪˈtektəbl/ 🔊 adjective◆The noise is barely detectable by the human ear. 这种声音人的耳朵几乎是察觉不到的。🔊🔊 OPP undetectable