Rarefactive
a. 稀少的, 稀薄的, 纯净的, 稀疏的
🗣️ 情景例句
Nothing ventured, nothing gained.
不入虎穴，焉得虎子。
A horse is neither better nor worse for his trappings.
相马不可凭马的装饰。
May I use your pen?
我可以用你的笔吗？