Rafters
椽
🗣️ 情景例句
And there's a phone call for you, Mr. Bennett. Bennett
先生， 有你的电话。
I feel terrible about it.
太抱歉了。
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）