"leave behind" in Chinese (Simplified)
落下留下忘在（某地）
Definition
离开某地时没有带走某人或某物，可以是有意或无意的。也可以指把事物、人物或回忆留在过去。
Usage Notes (Chinese (Simplified))
既可以用于实际物品（钥匙、包），也可以用于抽象事物（回忆、感受）。常用于搬家、成长或摆脱过去。既可表示无意忘记，也可意味着主动放下。
Examples
He accidentally left behind his keys at the restaurant.
他不小心把钥匙**忘在**了餐厅。
Moving to a new city means you sometimes have to leave behind old habits.
搬到新城市有时候意味着要**抛弃**旧习惯。
Some people find it hard to leave behind their past mistakes.
有些人很难**放下**过去的错误。
Let's focus on the future and leave behind what we can't change.
让我们专注于未来，把我们无法改变的事**抛在身后**。
Don't leave behind your bag at the airport.
别把你的包**落下**在机场。
She doesn't want to leave behind her childhood friends.
她不想**离开**她的童年朋友。