Hypersonics
特超声(速空气动力)学
🗣️ 情景例句
The wedding ceremony is about to begin.
婚礼就要开始了。
Have you finished yet?
你做完了吗？
I like light green, but Lily prefers dark blue.
我喜欢淡绿色，而莉莉却更爱深蓝色。