Pentadecyl
十五(烷)基
🗣️ 情景例句
We will help your children in learning lessons in their free time.
我们可以帮助您的孩子在他们空闲时学习功课。
Some of them are mine.
一部分是我的。
Everyday I thought about postcards.
我每天都想着明信片的事。