Undertrimmer
绱鞋里工
🗣️ 情景例句
It's quite different from what I expected.
这与我预想的很不相同。
We can't eat so much.
我们不能吃那么多。
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）