to move something into a low position

They lowered the coffin into the grave. 他们把棺材放入了墓穴。

Heavily pregnant by now, she lowered herself carefully into the chair. 因为现在重孕在身，她小心翼翼地在椅子上坐下。

He lowered his eyes (= looked down) in embarrassment when he saw me. 他看到我后尴尬地垂下了双眼。

to reduce something

Interest rates have been lowered again. 利率又降了。

Boil for five minutes, then lower the heat and simmer for half an hour. 煮上5分钟，然后调到小火再炖半小时。

Please lower your voice (= speak more quietly). 请说话小声点儿。

to make something worse than it was before

a lowering of standards 标准的降低

humorous Dale lowered the tone of the evening (= made it less socially acceptable) by telling a dirty joke. 戴尔讲了一个黄色笑话，破坏了晚会的气氛。

to behave in a way that makes people lose respect for you

[ + to infinitive ] I wouldn't lower myself to respond to his insults if I were you. 我要是你就不会贬低自己的身份去理睬他的辱骂。

positioned below one or more similar things, or of the bottom part of something

the lower deck of a ship 轮船的下层甲板

Her lower lip trembled as if she were about to cry. 她的下嘴唇颤抖着，好像要哭的样子。

I've got a pain in my lower (= the bottom part of my) back. 我后腰有点痛。