leave somebody/something alone
不去管
A:The baby is crying again.
A:那个孩子又哭了。
B:Leave him alone. he'll soon stop.
B：别理他，他一会见就会停下来的。
A:How can you do so? Perhaps something is wrong with him. Let's go and see him.
A:你怎么能这样呢?也许他真有什么事呢，我们去看看吧。
B:OK. Nothing serious. He just wants us to be with him.
B：好吧，没有什么大不了的事，他只是想让我们陪着他。