Polys
n. [医]多形核白细胞：多形核白细胞的俗称。见neutrophil( poly的复数形式 ); polyethylene 聚乙烯; polymer 聚合物; copolymer of vinylidene fluoride and tetrafluoroethylene 亚乙烯氟四氟乙烯共聚物（科技符号）
🗣️ 情景例句
I major in English and minor in French.
我主修英语，副修法语。
It's a bit too hard.
这有点太难了吧。
We were getting very worried.
我们都非常担心呢。