Cistine
氨基酸
🗣️ 情景例句
You have that look in your eye.
你的眼睛里显示出你已有了答案。
I am honored by the invitation.
承蒙招待，深感荣幸。
As soon as this was done, they cooked a meal over an open fire.
这件事刚刚做完，他们就在篝火上烧起了饭。