corrugate
v[I, Tn usu passive 通常用於被动语态]
be shaped or shape (sth) into folds, wrinkles or furrows (使某物)起皱褶, 起皱纹, 起波纹
His brow corrugated with the effort of thinking. 他皱著眉头用心地思考.
muddy roads corrugated (ie rutted and furrowed) by cart-wheels 被大车压出了一道道辙印的泥泞的道路.
🗣️ 情景例句
Did you hear the news?
你听说那条新闻了吗?
To drop
掉下
Were you in San Francisco at the time of the big earthquake in 1989?