单词：that is to say
(作插入语)那就是说, 即是, 换言之, 换句话说
that is to say的用法和样例：
例句
- It is, in essence, the principle of realism.这实质上也就是现实主义的原则。
- When they do it to Watts, they do it to me, too.他们恶待瓦茨时，也就是恶待我。
- This is a bill payable on demand.这是张见票即付的汇票。
- She acceded to the throne in 1952.她在一九五二年即位。