fall in
第三人称
falls in
现在进行时
falling in
过去式
fell in
过去完成时
fallen in
1
倒塌, 坍塌
to collapse under pressure, often due to structural weakness
- 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。
- As the earthquake shook the region, several buildings started to fall in, causing widespread damage.
当地震震动该地区时，几座建筑物开始倒塌，造成大范围的破坏。
- The abandoned mine entrance showed signs of instability and was at risk of falling in.
废弃的矿井入口显示出不稳定的迹象，有坍塌的危险。
- The roof of the neglected barn began to fall in, posing a danger to anyone nearby.
被忽视的谷仓屋顶开始坍塌，对附近的任何人构成危险。
- The weakened bridge supports led to a section of the bridge starting to fall in, prompting immediate closure for repairs.
桥梁支撑结构 weakened 导致桥梁的一部分开始坍塌，促使立即关闭进行维修。
2
加入, 参加
to join a group or organization
- 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。
- After attending several meetings, she felt a sense of belonging and chose to fall in with the community group.
参加了几次会议后，她感到了一种归属感，并选择加入社区小组。
- The company welcomed new employees, encouraging them to fall in with the corporate culture.
公司欢迎新员工，鼓励他们融入企业文化。
- Eager to contribute to the team, he decided to fall in and become a member of the project committee.
渴望为团队做出贡献，他决定加入并成为项目委员会的成员。
- The club had an open invitation for anyone interested to fall in and participate in their upcoming events.
俱乐部向任何有兴趣加入并参与他们即将举行的活动的人发出了公开邀请。
同义词：
3
列队, 就位
to assume one's designated position within a military formation or line, typically prompted by a command or order
- 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。
- As the officer entered the parade ground, the troops fell in with precision.
当军官进入阅兵场时，部队精确地列队。
- The recruits were instructed to fall in and stand at attention for the inspection.
新兵们被命令列队并立正接受检阅。
- During the training exercise, the platoon had to fall in quickly to respond to the simulated attack.
在训练演习中，排必须迅速列队以应对模拟攻击。
- The sergeant ordered the soldiers to fall in, arranging themselves in orderly rows for the march.
中士命令士兵们集合，为行军排列成整齐的队列。