Definition: to leave a place without taking someone or something with you Level: B1
我们赶飞机太匆忙了，我想我一定是把钥匙落下了。
In our rush to catch the flight, I think I ___left my keys ___behind.
疏散时，他们不得不留下珍贵的家庭照片。
When evacuating, they had to ___leave ___behind cherished family photos.
搬到一个新城市意味着要离开我所有的童年好友。
Moving to a new city meant ___leaving all my childhood friends ___behind.
