1/drop释义:v. 推动帮助宣扬下降终止n. 滴落下空投微量滴剂2/例句:I felt a rain drop dripping on my head.我感到一滴雨滴在我头上。3/drop组成的短语有:drop inv. 顺便走访a drop of something一口酒一杯酒pressure drop压力下降,压强下降a drop of一滴…at the drop of一看到…(就…),一听到…(就…)