Fluoropak
聚四氟乙烯载体
🗣️ 情景例句
What was your GPA last semester?
你上个学期的平均成绩是多少？
The doctor is busy examining a patient.
医生为给病人做身体检查而忙碌着。
Well, I don't think any of them is interesting.
我认为哪个都没意思。