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
Could I have the bill, please?
我能买单吗？
One of these days,I'd like to take a vacation.
某天,我想度假。
The show is supposed to be good.
这场表演应当是相当好的。