Daiamid
聚酰胺
🗣️ 情景例句
It's not finished yet.
现在还没有完成。
Misfortunes never (seldom) come alone (single).
祸不单行。
What should I do? Maybe I should have told that workmate I knew what he was doing.
我该怎么办？也许我早该对那个工人说我知道他的行为。