1.Off the top of my head, I'd say about 70%.

我脱口而出说百分之七十。

2.Her remarkable career spans seven decades.

她卓越的职业生涯长达七十。

3.He's going to be seventy years old.

他就七十岁了。

4.One degree of latitude on the earth's surface equals almost 70 miles.

地表上的纬度一度相当将近七十英里。

5.Those machines cost upwards of seven hundred thousand dollars.

那些机器花了七十万美元以上。

6.His business used to shine 60 or 70 shoes a day.

他过去每天擦六七十双鞋。

7.The blood he has donated is enough to save over 70 lives.

他捐献的血足够挽救七十多条生命。

8.Mrs Li is over seventy years old.

李太太七十多岁了。

9.It fell as far as 73.5 centimeters.

有时且降低到七十三度五分。

10.Every year it receives more than 750,000 visitors.

每接待超过七十五万游客。

11.The city of Lagos had a population of 700,000 in 1960.

拉哥斯的人口在1960只有七十万。

12.Four thousand four hundred and twenty dollars and seventy-eight cents.

里面共有四千四百二十美元七十八美分。

13.Along this ridge, the men create a 70-foot wide doorway.

沿着山脊，开辟出宽七十英尺的门道。

14.Seven grasses feed almost seven billion people.

七块草地可以养活几乎七十亿人。

15.Seventy years on the throne, she's such a loved lady.

在位七十，她是如此地受人爱戴。

16.Kind of like the U.S. was back in the 60's and 70's.

和美国六、七十代时候一样。

17.All right, that's 75% of your grade is the papers.

百分之七十五的分数取决于论。

18.This great machine will reap seventy-five acres and more a day.

这台大机器一天能收割七十五英亩多。

19.Huang Chonggui is seventy-three years old.

黄崇贵今七十三岁。

20.The seeds go into this drum, this motor turns the drum seventy revolutions a minute.

咖啡豆进入滚筒，电机每分钟转动滚筒七十圈。