Water vapor accounts for about 4% by volume in moist areas.

在气候潮湿地区，水汽按体积占（空气体积）4％左右。

This accounts for about 10 percent of the calories used each day.

这大约占到每天卡路里消耗总量的百分之十。

The Board of Education accounts for about a fourth of the city's budget.

教育局约占全市预算的四分之一。

It accounts for about 8% of malignant childhood tumors. (About the same incidence as neuroblastoma).

肾母细胞瘤是儿童最常见的肿瘤。

The second factor is planning bureau and accounts for about 30 percent to improve.

第二个因素是内局的及规划能改善大约占百分之三十左右。

In total heat of radiator, convection heat radiation accounts for about 61%, and radiant heat is about 39%.

实验散热器总放热量中，热对流放热量约占61%，辐射放热量约占39%。

On a typical day, spam accounts for about 90 percent of all email traffic on the Internet.

正常情况下，垃圾邮件会占全天所有电子邮件的90%。

The U.S. accounts for about three-quarters of total military spending by all NATO countries.

在北约的军事开支中，美国承担了四分之一。

The U. S. accounts for about three-quarters of total military spending by all NATO countries.

在北约的军事开支中，美国承担了四分之一。

Transport in the UK accounts for about 23% of the UK's emissions, having risen steadily over past decade.

英国交通的废气排放量在过去十年稳步上升，目前占英国废气排放量的23％。