Bipyridine
[医] α,α'-双吡啶
🗣️ 情景例句
Ring? Ring?
戒指？ 戒指？
If you can find another pair of tickets we'll have enough for a dozen people.
如果你能再找到两张，我们就可以有十二个人去了。
Mrs Flower's house has now been sold.
弗劳尔夫人的房子现已售出。