N-heptadecanoic acid
[建] 正十七酸
🧩 词语组成解析
🗣️ 情景例句
What's all the cheering about?
这么高兴是为什么？
The many children of that family used to play together for hours.
那一家的孩子们常常大伙一起玩上几个小时。
Very excited, the party dug a hole two feel deep.
队员们异常激动，就地挖了一个两英尺深的坑，