to fall in
01
倒塌, 坍塌
to collapse under pressure, often due to structural weakness
语法信息
形态构成
短语
运动动词
规则
不可分离
小品词
in
基本动词
fall
现在时
fall in
第三人称单数
falls in
现在分词
falling in
一般过去时
fell in
过去分词
fallen in
例子
The old well, weakened by erosion, finally fell in after a heavy rainstorm.
被侵蚀削弱的旧井，在一场暴雨之后终于倒塌了。
02
加入, 参加
to join a group or organization
例子
Excited about the cause, he decided to fall in and become an active member of the environmental organization.
对这个事业感到兴奋，他决定加入并成为环保组织的活跃成员。
03
列队, 就位
to assume one's designated position within a military formation or line, typically prompted by a command or order
例子
When the bugle sounded, the soldiers quickly fell in, ready for the morning drill.
当号角响起时，士兵们迅速列队，准备进行晨练。
