Delrin
迭尔林(聚甲醛树酯)
🗣️ 情景例句
Here are the samples for your examination.
这里是样品，请查看。
Many good cows have evil calves.
很多好母牛，会生坏小犊。
The picnic basket was no longer under the tree.
树下的野餐篮不见了。