Delrin
迭尔林(聚甲醛树酯)
🗣️ 情景例句
How can I reward your help?
我怎样才能报答你的帮助呢？
He seems to have a lot of strange ideas.
他似乎有很多奇怪的想法。
I can't see. I think they're in her pencil-box.
我看不到。我想大概在她的铅笔盒里。