Cavu
abbr. 云高及能见度无限；晴朗与能见度极好（Ceiling and Visibility Unlimited）
🗣️ 情景例句
What classes are mandatory for your major?
你的专业什么课是必修的？
When in doubt, play trumps.
举棋苟不定，何妨将一军。
We realized that they must have become unduly frightened by the rising flood,
我们意识到他们一定是被不断上涨的洪水吓坏了。