Cystathionine
n. [生化]胱硫醚,丙氨酸丁氨酸硫醚
🗣️ 情景例句
I am a representative of Politics Association.
我是政治协会的代表。
Excuse me for that.
对不起我为那件事。
You can never turn the clock back.
时光不能倒流。