吮吸shǔnxī把嘴唇聚拢在乳头或其他有小口ㄦ的物体上吸取东西。现多用于比喻{suck; draw sth. from a nipple or a small opening into the mouth through a suction force produced by gathered lips, oft. used figuratively}: 剥削阶级长期残酷地～着劳动人民的血汗。{The exploiting classes have been cruelly sucking the blood of the labouring people for a long time.}