Quadriad
n. 四个一组(或一套、一系列)
🗣️ 情景例句
Michelle, can we have a talk?
Michelle，我们能谈一谈吗？
Once bit, twice shy.
一朝被蛇咬，三年怕草绳。
A short while ago, however, he became a bus driver and he has not regretted it.
然而就在前不久，他开上了公共汽车，也并不为此而感到后悔。