该市的议会正在征集具备以下条件的租客：年龄在25岁以下，每周愿意花三至五小时陪伴邻居老人。

The city council is seeking applications from renters under the age of 25 who would like to spend three and five hours each week with their older neighbors.

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乔治亚南方大学一名20岁的大三学生告诉 BuzzFeed 新闻，她通常会花500-600美元购买课程访问码。

A 20-year-old junior at Georgia Southern University told BuzzFeed News that she normally spends $500-$600 on access codes for class.

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我们可以花三天到三个星期的时间到达那里。

We can take three days or three weeks to get there.

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And in fact, one of the lessons you may already be realizing with P sets is that things seem to take twice, three times, four times longer than you actually might think.

从习题集中你可能已经得出的一个教训就是,程序所花的实际时间往往是你开始以为的两倍，三倍，四倍甚至更长。

哈佛公开课 - 计算机科学课程节选