Delrin
迭尔林(聚甲醛树酯)
🗣️ 情景例句
And what sort of job?
哪一类的工作？
My father is vacationing in the north.
我父亲正在北方度假。
When Christ was born nearly two thousand years ago, many people, rich and poor, gave him presents.
大约2000年前基督出生时，许多人，不论穷富，都给他礼物。