Pona
abbr. paraffin; olefin; naphthene; aromatic (test for petroleum octane rating) 链烷烃
🗣️ 情景例句
that we can talk about us.
我们就可以谈谈我们。
It doesn't add up!
这就怪啦！
'It's all right,' she said, 'but isn't it upside down?'
是不错，她说到，但你不觉得有些混乱吗？