in·door /ˈɪndɔː $ -ɔːr/ ●●○ adjectiveadj [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。
Indoor is an adjective and indoors is an adverb. indoor是形容词,indoors则是副词
nYou say:
✗Don't say:
indoors sports nYou say:
✗Don't say:
I stayed indoor. 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.