Metaacetone
[化] 3-戊酮
🗣️ 情景例句
I miss them.
我想念他们.
You'll know our products better after this visit.
参观后您会对我们的产品有更深的了解。
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）