1 [I,T] to pull a liquid into your mouth 吮；吸啜 [T] to suck milk up through a straw 用吸管吸牛奶 ☞picture at blow 见blow插图

2 [I,T] to have sth in your mouth and keep touching it with your tongue 含在嘴里舔着吃: He was noisily sucking (on) a sweet. 他在出声地舔吃糖果。

3 [T] to pull sth in a particular direction, using force 抽吸；卷入: Vacuum cleaners suck up the dirt. 真空吸尘器吸走灰尘。