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    cobalt

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    cobalt

    Longman Dictionary of Contemporary English 5++朗文当代英语 5++LDOCE 5++朗文 5++
    Related topics: Elements
    co·balt /ˈkəʊbɔːlt $ ˈkoʊbɒːlt/ noun [uncountable]  1. HCEa shiny silver-white metal that is often combined with other metals or used to give a blue colour to substances such as glass. It is a chemical element: symbol Co 钴〔一种化学元素，符号为Co〕2. (also cobalt blue) a bright blue-green colour 深蓝色，钴蓝 —cobalt adjective
    Examples from the Corpus
    cobalt• During irradiation, food is exposed to gamma rays from sources such as cobalt 60 or cesium 137.• The range of the artist's palette widened to include cobalt blue, ultramarine, chrome yellow and viridian green.• The metals probably include chromium, manganese, cobalt, vanadium, nickel, tungsten and tantalum.• Meteorite metals contain about 0. 5 percent cobalt, which sells for about $ 15 a pound.• The Royal Shrewsbury Hospital's cobalt unit opened only last September after a massive public fund-raising drive.• In modern commercial synthesis graphite is mixed with a metal solvent - cobalt or nickel is used today.• Uranium shutters, that shield the cobalt radioactive source until the patient is in position, were found to be crumbling.• The result was a glorious panoply of sensual colour ranging from vibrant cobalt to cool mauve-blue, from sunflower yellow to melon.    Origin cobalt (1600-1700) German kobalt, from kobold “goblin”; because goblins were thought to mix it in with silver found in the ground
    co·balt nounChineseSyllable
    often that with silver-white metal other shiny combined metals a Corpus is


    cobalt
    co‧balt /ˈkəʊbɔːlt $ ˈkoʊbɒːlt/ noun [uncountable]
     Date: 1600-1700
     Language: German
     Origin: kobalt, from kobold 'goblin'; because goblins were thought to mix it in with silver found in the ground
    1. a shiny silver-white metal that is often combined with other metals or used to give a blue colour to substances such as glass. It is a chemical element: symbol Co
    2. (also cobalt blue) a bright blue-green colour
    —cobalt adjective


    co·baltBrE /ˈkəʊbɔːlt/ 🔊NAmE /ˈkoʊbɔːlt/ 🔊 noun [uncountable] (symbol Co) a chemical element. Cobalt is a hard silver-white metal, often mixed with other metals and used to give a deep blue-green colour to glass. 钴 (also ˌcobalt ˈblue) a deep blue-green colour 深蓝色；钴蓝<titled tranID="51" status="1">coast</titled>beach ◇ seaside ◇ coastline ◇ sand ◇ seashore

    These are all words for the land beside or near to the sea, a river or a lake. 以上各词均指海滨、河岸或湖畔。

    • coast the land beside or near to the sea or ocean 指海岸、海滨：◆a town on the south coast of England 英格兰南海岸的一座城镇◆The coast road is closed due to bad weather. 由于天气恶劣，滨海公路暂时封闭。 NOTE It is nearly always the coast, except when it is uncountable. 除用作不可数名词外，coast 几乎总是与 the 连用：◆That's a pretty stretch of coast. 那是一段美丽的海岸线。
    • beach an area of sand, or small stones, beside the sea or a lake 指有沙石的海滩、海滨或湖滨：◆She took the kids to the beach for the day. 她带了孩子去海滩玩一天。◆sandy beaches 沙滩
    • seaside (especially BrE) an area that is by the sea, especially one where people go for a day or a holiday 尤指人们游玩、度假的海边、海滨：◆a trip to the seaside 去海滨旅行 NOTE It is always the seaside, except when it is used before a noun. 除用于名词前外，seaside 总是与 the 连用：◆a seaside resort 海滨胜地 The seaside is British English; in American English seaside is only used before a noun. * the seaside 为英式英语，在美式英语中，seaside 只用于名词前。
    • coastline the land along a coast, especially when you are thinking of its shape or appearance 指沿海地带，尤其是海岸线、海岸地形或轮廓：◆California's rugged coastline 加利福尼亚州崎岖的海岸线
    • sand a large area of sand on a beach 指沙滩：◆We went for a walk along the sand. 我们去沙滩上散了散步。◆a resort with miles of golden sands 有着绵延数英里金色沙滩的度假胜地
    • the seashore the land along the edge of the sea or ocean, usually where there is sand and rocks 通常指有沙石的海岸、海滨：◆He liked to look for shells on the seashore. 他喜欢在海滨捡贝壳。

    beach or seashore? 用 beach 还是 seashore？

    • Beach is usually used to talk about a sandy area next to the sea where people lie in the sun or play, for example when they are on holiday/vacation. Seashore is used more to talk about the area by the sea in terms of things such as waves, sea shells, rocks, etc., especially where people walk for pleasure. * beach 通常指海边的沙滩，人们度假时可以躺着沐浴阳光或玩乐；seashore 多指有海浪、贝壳、岩石等的海岸，尤指人们散步消遣的海滨。

    Patterns

    • along the coast/beach/coastline/seashore
    • on the coast/beach/coastline/sands/seashore
    • at the coast/beach/seaside/seashore
    • by the coast/seaside/seashore
    • a(n) rocky/unspoiled coast/beach/coastline
    • to go to the coast/beach/seaside/seashore