Related to word: fall
片语动词
When soldiers fall in, they align or form a column, with one behind the other.
列隊；集合
The soldiers fell in on the parade ground to prepare for training.
士兵們在閱兵場上列隊準備訓練。
The commander ordered the troops to fall in quickly.
指揮官命令部隊迅速列隊。
After the exercise, they fell in orderly to return to base.
演習結束後，他們整齊地列隊返回基地。
When a roof or ceiling collapses due to damage, it descends to the ground.
（屋頂或天花板）倒塌；崩壞
After the storm, the roof collapsed due to accumulated water.
暴風雨過後，屋頂因積水而倒塌。
The ceiling of the old house fell in during the earthquake.
地震期間，老房子的天花板倒塌了。
After years of damage, the roof of the warehouse finally fell in.
經過多年的損壞，倉庫的屋頂終於倒塌了。