Polysaccharid
n. 多糖类
🗣️ 情景例句
I happen to have
我这儿碰巧有一项
He has been working in advertising for ten years, but now he is teaching.
他曾经在广告公司服务十年，但现在在当老师。
These were the so-called mainframe machines.
它们被称为主机。