Balteus
古罗马人的腰带[肩带]
🗣️ 情景例句
I wonder what the problem is.
我不知道发生了什么问题。
Who is the auther of this play?
谁是这戏剧的作者？
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）