lip

bite one's lip

repress an emotion; stifle laughter or a retort

咬紧嘴唇；压抑感情；抑制笑容；忍住不说

she bit her lip to stop the rush of bitter words.

她咬紧嘴唇，强忍住没冲口说出尖刻的话。

curl one's lip

raise a corner of one's upper lip to show contempt; sneer

（表示轻蔑的）撇嘴

lick (或 smack) one's lips

look forward to something with relish; show one's satisfaction

舐嘴唇（表示满意和渴望）

my (或 his 等) lips are sealed

pass one's lips

be eaten, drunk, or spoken

吃进去；喝下去；说出口

pay lip service to

express approval of or support for (something) without taking any significant action

口惠而实不至