fall in

collapse 塌陷; 倒塌: The roof of the tunnel fell in. 隧道顶部塌了下来. fall (sb) in (cause sb to) form a military formation; (cause sb to) go on parade （使某人）排成军事队形; （使某人）集合: The sergeant ordered his men to fall in 中士命令士兵集合. fall in with sb/sth (a) meet sb by chance; join sb; become involved with sb/sth 偶遇某人; 与某人在一起; 与某人[某事物]牵涉在一起: He fell in with bad company. 他交上了损友. (b) agree to or show support for sb/sth 同意或支持（某人[某事物]）: She fell in with my idea at once. 她立即同意了我的意见.

faithlessly, faithlessness, fake, faker, fakir, falcon, falconer, falconry, fall, fall apart, fall away, fall back, fall back on, fall behind, fall behind (sb/sth), fall by the wayside, fall down, fall for, fall for sb, fall guy, fall in love, fall in love (with), fall in love with, fall in love with sb., fall in with, fall into, fall into step, fall into sth, fall off, fall on one's knees, fall on/upon sb/sth, fall out, fall out of, fall over, fall over sb/sth, fall through, fall to, fall to (doing sth), fall to bits, fall to doing,