Tautomer
n. [化]互变(异构)体
🗣️ 情景例句
when I was about eighteen years old.
那时我差不多十八岁。
Please be reasonable.
请别做无理的要求。
In Maori history,the first traveller to reach New Zealand in the year 950 was a man called Kupe.
毛利人的历史上，于950年第一个到达新西兰的旅行者是一个名叫库佩的人。