Polycompound
多组分化合物
🗣️ 情景例句
A little over two hours.
两个钟头多一点。
It gets in around 11:45.
大约11点45分到。
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）