Pentaene
[化] 五烯
🗣️ 情景例句
We're in the phone book.
我们家的电话号码 可以在电话簿上查到。
Sure thing, boss. All in a day's work.
当然，头，这是家常便饭。
Most of North and South China will have a cold wet day.
华北、华南大部分地区将寒冷潮湿。