If finer materials are used, such as cut grass, the depth should be two and a half to seven and a half centimeters.

VOA: special.2009.06.30

Five seven, well ok five six and a half is not enough to teach happiness?

米70。。。是1米69不够格传授快乐吗？

哈佛公开课 - 幸福课课程节选

The number of students taken to hospitals increased one and a half times from nineteen ninety-seven to two thousand seven.

VOA: special.2009.08.13

It offers seven and a half billion dollars over five years to improve health, education and security.

VOA: special.2009.10.17

The money is to come from the second half of the seven hundred billion in TARP funds.

VOA: special.2009.02.13

Beets need the acidity level in the soil to be six to seven and a half.

VOA: special.2010.03.02