Delrin
迭尔林(聚甲醛树酯)
🗣️ 情景例句
We live with my parents, Dr. and Mrs. Philip Stewart.
我们和父母住在一起 ，我父母是Philip Stewart夫妇。
He most lives who lives most for others.
活著对别人贡献最多的人，活得最有意义。
But there are some parts of the word where even now people cannot write.
但直到现在，世界上有些地方，人们还不会书写。