Rarefactive
a. 稀少的, 稀薄的, 纯净的, 稀疏的
🗣️ 情景例句
We usually ship the goods by regular liners.
我们一般是定期班轮装运货物。
That's just what I was thinking.
我就是这么想的。
After making a short test flight at 4,15 a.m.,
布莱里奥凌晨4点15分作了一次短距离试飞，