suction

1. N-UNCOUNT Suction is the process by which liquids, gases, or other substances are drawn out of somewhere. 抽吸(液體、汽體等)

Dust bags act as a filter and suction will be reduced if they are too full. 灰塵袋是一個過濾器，一旦太滿吸力就會減弱。

2. V-T If a doctor or nurse suctions a liquid, they remove it by using a machine which sucks it away. 吸(痰)

Michael was showing the nurse how to suction his saliva. 邁可正演示給護(hù)士看如何吸出他的唾液。

3. N-UNCOUNT Suction is the process by which two surfaces stick together when the air between them is removed. 真空吸附[oft N n]

...their pneumatic robot which uses air to move and sticks to surfaces by suction. ...他們的氣動機(jī)器人依靠空氣來移動并通過真空吸附固定于物體表面。