under prep.低于;在...下;在...内;在...控制下adv.在昏迷中;在...下adj.下面的;从属的;少于的
双语例句
A sixlane, gradeless superhighway is under construction. 一条无坡度的六线高速公路正在建筑中。
A rigid board made of layers of fiberboard or paper bonded to a gypsum plaster core,used instead of plaster or wood panels in construction to form walls. 石膏灰泥板,灰胶纸柏板由石膏灰泥作芯板结合几层纤维板或纸浆板制成的硬板,在建筑中用于代替灰泥或木板来建造墙壁。