App.
abbr. (=apparatus； apparent；appended；appendix；appointed；apprentice；approved；approximate)\\n
🗣️ 情景例句
The wedding banquet was prepared beautifully.
婚礼宴会准备的很好。
That's fine.
好得很。
a trough (the lowest point), a height (the vertical distance from the trough to the crest),
波谷（最低点）、浪高（从波谷到浪峰的垂直距离）