Trackside
[铁]n.轨道旁,线路旁
🗣️ 情景例句
Sorry to be a bother.
不好意思打扰你。
To sum up, she is a nice girl.
总之，她是个可爱的女孩。
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）