Val
[化] 缬氨酸
🗣️ 情景例句
I want to thank you for placing such a big order with us. You won't be disappointed.
谢谢你下了这么大的订单，你一定不会失望的。
He has gone home.
他已经回家去了。
Is this a pen?
这是一支钢笔吗？