Nanon
毫微米(等于10的-9次方米)
🗣️ 情景例句
to pick up a surprise.
接一个意外惊喜回来。
I will talk more about that in a moment.
目前我要多讨论那个问题。
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）