Ulpa
abbr. ultra-low penetrating air 超低穿透气
🗣️ 情景例句
Nice to meet you, Dean Rafer.
很高兴见到你， Rafer主任。
Wisdom is a good purchase though we pay dear for it .
为了求知识，代价虽高也值得。
It repeated these circles over and over again.
它首先向右飞一个圆圈，然后向左飞一个圆圈。