Delrin
迭尔林(聚甲醛树酯)
🗣️ 情景例句
Mom,
妈，
Exchange is no robbery.
公平交易并非强行夺取。
I never heard of anyone making a'skeleton', as we were taught at school.
我从未听说过任何一位作家像我们在学校学的那样，动笔前先列什么提纲。