Suction is the process by which liquids, gases, or other substances are drawn out of somewhere.
例句
Dustbags act as a filter and suction will be reduced if they are too full...集尘袋起着过滤的作用，所集的灰尘太多时其吸附作用就会减小。If the teat enters the cup, the suction of the milking machine ensures that it becomes attached.乳头进入奶杯后，吸奶器的吸力能确保乳房吸附在上面。
VERB
(用医疗器械)抽吸，吸出
If a doctor or nurse suctions a liquid, they remove it by using a machine which sucks it away.
例句
Michael was showing the nurse how to suction his saliva...迈克尔正给护士示范如何把他的唾液吸出来。We found a cyst and I suctioned off the liquid within.我们发现了一个囊肿，我把其中的液体吸了出来。
N-UNCOUNT
(平面的)相吸
Suction is the process by which two surfaces stick together when the air between them is removed.
例句
...their pneumatic robot which uses air to move and sticks to surfaces by suction.他们的气动机器人依靠空气来移动，靠吸力附着于物体表面
英汉词典释义
n.
吸,抽吸
a suction machine吸尘机suction effect吸引作用Some pumps works by suction.有些泵是用吸力工作的。
英英词典释义
Noun
1. a force over an area produced by a pressure difference
2. the act of sucking
Verb
1. remove or draw away by the force of suction;
"the doctors had to suction the water from the patient's lungs"
2. empty or clean (a body cavity) by the force of suction;