Nonadecylic acid
[化] 十九烷酸
🧩 词语组成解析
🗣️ 情景例句
She is giving me piano lessons in exchange for her English classes.
我教她英语，她教我弹钢琴。
Reason is the guide and light of life.
理智是人生的响导和光辉。
The answer is English.
答案是英语。