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
Where are you going during Summer vacation?
暑假你打算去哪儿？
What is that to you?
那对你算什么？
Collecting, by occupying spare time so constructively, makes a person contented, with no time for boredom.
收藏活动通过富有建设性地利用业余时间使人感到心满意足，不再有无聊之日。