indoor

 Longman Dictionary of Contemporary English 5++朗文当代英语 5++LDOCE 5++朗文 5++in·door /ˈɪndɔː $ -ɔːr/ ●●○ adjective [only before noun]  IN/INSIDEused or happening inside a building 室内的，户内的 OPP outdoor an indoor swimming pool 室内游泳池 the world indoor athletics championship 世界室内田径锦标赛 Too much central heating can harm indoor plants. 中央供暖系统温度太高对室内植物有害。 USAGE: Indoor, indoorsIndoor is an adjective and indoors is an adverb.  indoor是形容词，indoors则是副词nYou say: indoor sports 室内体育项目 ✗Don't say: indoors sportsnYou say: I stayed indoors. 我待在屋内。 ✗Don't say: I stayed indoor.

Examples from the Corpus

indoor• indoor lighting• Traditionally, markets were held outdoors, but many cities in Britain now have indoor markets.• indoor soccer• The hotel has a heated indoor swimming pool.• This year, the world indoor tennis championship will take place in Paris.

in·door adjective →USAGE1LDOCE OnlineChineseSyllable  

building happening a or used inside Corpus

indoor
in‧door /ˈɪndɔː $ -ɔːr/ adjective [only before noun]
used or happening inside a building
   OPP  outdoor:
    an indoor swimming pool
    the world indoor athletics championship
    Too much central heating can harm indoor plants.
     
GRAMMAR
  indoor, indoors
  Indoor.is an adjective and indoors is an adverb:
  ▪ I stayed indoors (NOT indoor).
  ▪ indoor sports (NOT indoors sports)

🔑 in·doorBrE /ˈɪndɔː(r)/ 🔊NAmE /ˈɪndɔːr/ 🔊 adjective [only before noun] located, done or used inside a building （在）室内的；在户内进行的；在室内用的◆an indoor swimming pool室内游泳池◆indoor games室内游戏◆the world indoor 200 metres champion室内 200 米赛世界冠军 OPP outdoor