That is an area about seven times larger than the yearly average.

这一面积大约是年平均水平的7倍。

In Chicago, the district spends an average of $19,000 yearly per student at small high schools.

在芝加哥，该学区小型高中每个学生每年平均花费1。9万美元。

The data suggested that the yearly average amount of Antarctic sea ice reached its lowest level.

这些数据表明，南极海冰的年平均量达到了最低水平。

The E.P.A. has set the safety threshold for PM 2.5 at a yearly average of 12 micrograms per cubic meter.

环保署给pm2.5设置的浓度限值为年平均浓度12μg/m3。

Since 2010, Kenya has received more rainfall than usual -- the yearly average has been significantly up on 2010's 650mm almost every year since.

自2010年以来，肯尼亚的降雨量比往常更多--此后几乎每年的年平均降雨量都比2010年的650毫米明显增加。

The U.N. desertification agency says the project will need to plant an average of 8.2 million hectares yearly to reach its goal of 100 million hectares by 2030.

联合国防治荒漠化机构表示，该计划需要平均每年种植820万公顷，才能在2030年之前达到种植1亿公顷的目标。

The WMO said in a new report there was a 20 percent chance the yearly average temperature will rise above 1.5 Celsius higher than the pre-industrial average levels in at least one year.

世界气象组织在一份新的报告中称，至少在一年内，年平均气温将比工业化前的平均水平高出1.5摄氏度的可能性为20%。

Researchers are working to reduce these threats Last year, commercial companies, military and civil departments and amateurs sent more than 400 satellites into orbit, over four times the yearly average in the previous decade.

研究人员正在努力减少这些威胁。去年，商业公司、军事和民用部门以及业余爱好者将 400 多颗卫星送入轨道，这一数字是过去十年年平均水平的四倍多。