Organic nitrogen
[医] 有机氮
🧩 词语组成解析
🗣️ 情景例句
We need a man who knows the ropes.
我们需要位内行人士。
New York is famous for its tall buildings.
纽约以高楼大厦而闻名。
Please come in and sit down. But come to school earlier next time.
但下次要早点到校。