Pir
abbr. 蛋白序列数据库（Protein Identification Resource）；聚三聚氰酸酯
🗣️ 情景例句
This is no small accomplishment.
这是非同小可的成就。
After getting up,I go into the bathroom and take a shower.
在起床以后，我走进洗澡间并冲个澡。
There was a big smile on her face.
她脸上充满笑容。