Chelic polymer
[化] 螯形聚合物
🧩 词语组成解析
🗣️ 情景例句
A couple of weeks.
两、三个星期吧。
How long will it take for a package to get to California?
你把包裹寄到加州要多长时间?
The question became one of whether Man could control the disease he had invented.
现在的问题是，人类能否控制住这种人为的疾病。