Fluoropak
聚四氟乙烯载体
🗣️ 情景例句
It really doesn't matter at all.
真的没关系。
She feels shy about meeting Frank for the first time.
她对于第一次和弗兰克约会感到难为情。
Soon afterwards, the balloon began to descend and it landed near an airfield.
不久，气球开始降落，在一个停机坪附近着了陆。