sit at someone's feet

be someone's pupil or follower

做某人的学生（或追随者），师承（某人）

sit in judgement

sit on the fence

sit on one's arse

(vulgar slang)do nothing; fail to take action

(粗俚)无所事事；不采取行动

sit on one's hands

take no action

不采取行动

sit (heavy) on the stomach

(of food) take a long time to be digested

（食物）很难消化

sit on someone's tail

drive extremely close behind another vehicle, typically while waiting for a chance to overtake

（尤指为等机会超车时）紧跟着开车

sit tight

(informal)remain firmly in one's place

(非正式)稳留原处

sit up (and take notice)

(informal)suddenly start paying attention or have one's interest aroused

(非正式)警觉；突然激起兴趣

sit back

relax

放松

sit back and enjoy the music.

放松听音乐。

sit by

take no action in order to prevent something undesirable from occurring

袖手旁观，无动于衷

I'm not going to sit by and let an innocent man go to jail.

我不打算袖手旁观让清白无辜的人坐牢。

sit in for

temporarily carry out the duties of (another person)

临时行使（别人的）职责

sit on informal 非正式

fail to deal with

搁置，拖延

she sat on the article until a deadline galvanized her into putting words to paper.

她拖着写那篇文章，直到截止日期临近时，才促使她落笔成文。

subdue (someone), typically by saying something intended to discomfit or embarrass them

（尤指用说令某人不快或难堪的话来）压制（某人）

sit something out

not take part in a particular event or activity

不参与某件事或活动

he had to sit out Sheffield Wednesday's UEFA Cup game.

他不得不拒绝参加星期三在设菲尔德举行的欧洲联盟杯比赛。