请区分一下plastic 和plasticsThese spoons are made of plastic.many things are made of plastics .看过这样的例子.更分不清这两个词了.难道能通用?
2022-05-02 02:00:10 22次 反馈错误 加入收藏 正确率 : 100%
题目内容：
请区分一下plastic 和plastics
These spoons are made of plastic.
many things are made of plastics .
看过这样的例子.更分不清这两个词了.难道能通用?
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