Pona number
[化] 波纳值
🧩 词语组成解析
abbr. paraffin; olefin; naphthene; aromatic (test for petroleum octane rating) 链烷烃
🗣️ 情景例句
Nice weather today, isn't it?
天气不错，是吧？
I'm fond of this beer.
我喜欢这种啤酒。
She was choosing a book. He told her about the accident.
她正在选书。他将发生的情况告诉了她。