Quadrine
[化] α-氨基丁酸; α-氨基正丁酸
🗣️ 情景例句
Hello, it's good to see you again.
很高兴又见到你。
Nothing venture, nothing have.
不入虎穴，焉得虎子。
That's it. Thank you for your help. Goodby.
对的。谢谢你的帮忙，再见。