get 当“清楚，懂得”讲时，前面不加介词。用法相当于understand/hear懂，理解听见
例句：
I didn't get what he said because the music was so loud. 音乐声太大了，我听不见他说什么。
I told that joke to my friend， but she didn't get it. 我跟朋友讲了那个笑话，可她没有听懂。
