Stereoregularity
立構規整性
??? 情景例句
Well, for one thing, he's my sister's boyfriend. Ann talks about Jack all the time.
首先，他是我妹妹的男朋友。安整天就是杰克長杰克短的。
I'm the youngest.
我最年輕
It involves a lot of hard work.
那需要很多的辛勤工作。