Acetylcholine
n. 乙酰胆碱\\n[化] 乙酰胆碱
🗣️ 情景例句
Have a nice evening.
祝你们今晚愉快。
When I get sleepy,I'll probably get ready for bed.
当我磕睡时，我将上床。
No, more, about 130 years ago. Most of the slave owners were rich farmers who lived in the south. They wanted to keep their slaves.
不，还要早，大约130年前。大多数奴隶主都是住在南方的富有的农场主。他们想保留自己的奴隶。