Zedeflon
四氟乙烯均聚物
🗣️ 情景例句
I understand.
我了解。
The early bird catches the worm.
捷足先登。
Before returning home at night.He took a shower and changed back into his suit.
晚上回家前，他洗个淋浴，重新换上那身黑色西服。