Pir
abbr. 蛋白序列数据库（Protein Identification Resource）；聚三聚氰酸酯
🗣️ 情景例句
He's teething.
他正在长牙齿。
Do you have a book?
你有一本书吗？
No matter where you live, you would find it difficult not to laugh at, say, Charlie Chaplin's early films.
比如说，不管你生活在哪里，你看查理。卓别林的早期电影很难不发笑。