Why do you laugh ______ your photos Are they funny?

问题描述:

Why do you laugh ______ your photos Are they funny?
填介词,

填at laugh at是嘲笑的意思,这里可以理解为对..笑
两句话练起来翻译是:你为什么对着你的照片笑呢?它们很滑稽吗?