Eaca
[化] 6-氨基己酸
🗣️ 情景例句
He's just fooling around.
他用情不专。
How many languages do you speak?
你说多少种语言？
On his arrival he was sold to a farmer and worked in the fields.
一到美国，他就被卖给了一个农场主，到地里干活。