Nonadecyl
十九(烷)基
🗣️ 情景例句
That's it--show.
就是它 ，show。 ?
We have a lot of invitation cards, but they are all for the same date.
我们接到了许多请帖，但是上面的日期却全都是同一天。
Ah, it's a secret!
呵，这是个秘密！