dry up phr v 1 [I,T dry sth ↔ up] if a river or lake dries up, the water in it disappears 〔河、湖等〕干涸 2 [I] if a supply of something dries up, there is no more of it 〔供应〕枯竭，断绝: Our research project was cancelled when the money dried up. 经费来源断绝后，我们的研究计划就取消了。 3 [I,T dry sth ↔ up] to dry dishes that have been washed, using a cloth 〔将盘、碟等〕揩干