Cystathionine
n. [生化]胱硫醚,丙氨酸丁氨酸硫醚
🗣️ 情景例句
Why are you in such a good mood?
为什么你的心情那么好？
There must be someone behind the door.
门后必然有人在。
And you lent me some money too, which I never repaid you.
你还借给我一些钱，这笔钱我还没有还你呢。