Acetylcholine
n. 乙酰胆碱\\n[化] 乙酰胆碱
🗣️ 情景例句
Just cool down.
冷静一点。
The more a man knows, the less he knows he knows.
懂得越多，就越知道自己懂得不多。
What was the population of the more developed countries in 1950?
1950年较发达国家的人口是多少？