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
You're right. How do you feel about it?
说对了。你觉得怎么样？
Why aren't you happy?
为什么无聊呢？
How come you speak such good English?
你为什么能说这么好的英语呢？