two sets

• 两组

two sets的用法和样例：

例句

1. The two sets of traffic lights were out of phase.
   那两组交通灯不同步。
2. The symptoms did not differ between the two groups.
   两组实验的结果没有显示出不同的症状。

词汇搭配

• tongue enough for two sets of teeth 饶舌