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大约三十分钟
1、four thirty───430
2、minutes───n.分钟（minute的复数）；会议记录；备忘录；v.把…记录在案；为…测定时间（minute的单三形式）
3、thirty-first───第三十一
4、about thirty───大约三十岁
5、one thirty───130
6、thirty degrees───三十度
7、thirty madison───麦迪逊三十号
8、thirty───adj.三十个的；num.三十；n.三十年代
9、in minutes───在几分钟内
1、He glances up at the wall clock and realizes he only has about thirty minutes before he has to leave to meet Jane for lunch.───瞥了一眼墙上的钟，他意识到还剩下三十分钟就要去和简一起吃午饭。
2、Sorry, I can't. It takes about thirty minutes.───抱歉我不能。大概需要三十分钟。
3、Keep the fish in the saltwater for about thirty minutes. After that, wash them again in clean water.───让鱼在盐水中浸泡约30分钟，之后，再用清水洗净。
4、When I woke up, I cried for about thirty minutes.───我醒后哭了得有三十分钟。
5、I read someone express exactly this sentiment on Twitter about thirty minutes ago.───在大约30分钟前，我在Twitter上看到了有人表达一摸一样的情绪。
6、We also meet with career services, who, in about thirty minutes, ensured that we weren't lulled into a false sense of complacency.───我们也与职业服务会谈，在约三十分钟的时间内向我们保证我们肯定不会沉醉与自满之中。
7、It takes me about thirty minutes from my home to the office by bike.───从我家到公司骑车大约需要三十分钟。
8、about thirty minutes' walk.───步行大约30分钟。
9、Well, I don't know exactly how far it is , but always takes me about thirty minutes to the factory.───嗯，我不知道实际上有多远，但总要三十分钟才到工厂。