N-formylpteroic acid
[化] N-甲酰蝶酸
🧩 词语组成解析
🗣️ 情景例句
who have made my stay in the United States so wonderful.
是你们使得我在美国的生活如此多采多姿。
What is he doing?
他做什么事？
I would like to ask you about some stamps.
我想问问有关一些邮票的事。