Delrin
迭尔林(聚甲醛树酯)
🗣️ 情景例句
Happy Mother's day!
母亲节快乐。
Since we are likely to place sizable orders regularly we hope that you will make some special concessions.
由于我方将定期大批量订购，希望贵方作出一些特殊的让步。
Is that tin of tobacco for me?
那听烟丝是给我的吗？