单词：know what it is
深知其中滋味;亲身经历过
know what it is的用法和样例：
例句
- Nicodemus and Joseph know all about that.尼哥底母和约瑟都亲身经历了这个能力。
- The novel is written from personal experience.这部小说是根据个人亲身经历写成的。
词汇搭配
- You know what it is.你是知道他那个脾气的...
- know what o'clock it is什么都知道; 熟悉情...