about a dozen of的用法和样例：
例句
- At the airport bookstore, there are only about a dozen freestanding shelves of books.
在机场书店，只有大约一打是专门的书架。 - About one minute later there was another explosion from the front door where at least a dozen deatheaters rushed in with their wands held in an attacking stance.
大约一分钟以后，另一次爆炸在前门响起，然后至少一打的食死徒冲了进来，他们的魔杖摆出进攻的架势。
