Pentosamine
[化] 戊糖胺
🗣️ 情景例句
Ring? Ring?
戒指？ 戒指？
One boy is more trouble than a dozen girls.
一个男孩比十二个女孩还要麻烦。
Nice to meet you too! What class are you in?
我也很高兴。你是哪班的？