Pivalolactone
[化] 新戊内酯
🗣️ 情景例句
For payment we would prefer and L/C.
我们更愿意使用信用证的方式付款。
Wouldn't I know?
我还会不知道吗？
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）