Haloport f
一种聚四氟乙烯载体
🗣️ 情景例句
I'm sorry, Mom.
我很难过， 妈妈。
What's the rate for a station wagon?
租一辆客货两用轿车要多少钱？
The secretary worked late into the night, preparing a long speech for the president.
秘书工作到深夜，为总统准备发言稿。