Kynar
聚偏二氟乙烯
🗣️ 情景例句
Dean Rafer called me today.
Rafer主任今天打电话给我。
I hope you can like the picnic.
我希望你能喜欢这野餐。
In the light of this statement, teachers live by selling knowledge,
根据这种说法，教师靠卖知识为生，哲学家靠卖智慧为生，