increase by 30 percent的意思|示意

Religious groups gained the most (30 percent), followed by environmental groups (23 percent), whereas educational institutions experienced only a very small increase in donations (3 percent).

宗教团体增幅最大（30%），其次为环境组织（23%），而教育机构所获得增幅仅有少量增长（3%）。

In one study, accelerating spring's arrival by 30 days prompted a 54 percent increase in ragweed pollen production.

在一个研究中表明，春天加速30天到来提高了花粉54%的产量。

We are spending billions to increase capacity on the Tube by 30 percent, in what is the biggest investment seen in decades.

我们将投入数十亿英镑来提高地铁三成容量，这是过去几十年来所投入的最大一笔资金。

The scientists hope that the resulting crop will increase yield by 30 percent, according to Oikeh.

科学家希望开发出的新品种能使农作物产量增加百分之三十。

By the year 2005, the number of teens, age 14 to 17, will swell by 17 percent, with an even larger increase among people of color - 20 percent among African-Americans and 30 percent among Latinos.

到2005年，年龄在14到17岁青少年的数量将增长17%，其中有色人种的增长更为迅速—美国黑人增长20%，拉丁裔美国人增长30%。

Rapid urbanization is expected to increase the built areas in cities by 30 percent, straining service delivery in land and housing, says Joshi-Ghani.

快速的城市化会使城市中的建设用地增加30%，给土地和住房方面的服务供应造成压力，Joshi - Ghani说。