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
about taking care of babies, I assure you.
如何照顾小孩， 我向你保证。
Pride apes humility.
大巧若拙。
What time would be good for you?
什么时间你合适呢？