Pir
abbr. 蛋白序列数据库（Protein Identification Resource）；聚三聚氰酸酯
🗣️ 情景例句
When I think something is right, I will stick to that.
若我认为某件事是对的，我会坚持到底。
I knew it!
我就知道！
Oh, good. We're in the same class.
我们在一个班的。