But in an average year, two or three will strike the mainland of North America.
但平均每年会有两到三个袭击北美大陆。
In an average year more than 100,000 Americans are shot by guns, more than 30,000 fatally.
因为平均每年将有超过10万的美国人遭到射击，其中有超过3万人致死。
In an average year, the geological survey estimates that several million earthquakes occur around the world.
地震调查作出的估计显示，在一年中，就要发生几百万次地震。
The rains were abnormally heavy -- the Yangtze basin had 15 percent more rainfall in 2010 than in an average year.
2010年，降雨殊为异常，长江流域的降水量要比平常年份多出15%。
It was the 34th year running that global temperatures have been above the 20th-century average; the last below-average year was 1976.
至此已有连续34年全球气温超过20世纪平均温度，最近一次低于平均值是1976年。
Meanwhile, pessimists can still bemoan that with a projected 28 approvals for the full year, 2008's looks like another below-average year.
与此同时，悲观者预计全年批准28种新药，2008年更像一个低于平均数的年份。
The available surface water resources are consist of available water supplied both by built works and intended works in design average year.
地表水可利用量。应包含现有水利工程的可供水量和设计水平年内规划拟建水利工程所能提供的水量。
Seasonal influenza kills up to 500,000 people in an average year but Shindo said that in Mexico, at least, the H1N1 flu was causing more severe disease.
Shindo说道，季节性流感平均每年要造成50万以上的人死亡，但是在墨西哥，h 1 n 1流感正在造成更严重的疾病。
Seasonal influenza kills up to 500, 000 people in an average year but Shindo said that in Mexico, at least, the H1N1 flu was causing more severe disease.
Shindo说道，季节性流感平均每年要造成50万以上的人死亡，但是在墨西哥，H1N1流感正在造成更严重的疾病。
People living in 15 emerging nations, led by India, Bangladesh, China, Vietnam andPakistan, accounted for almost 80 percent of all those affected by floods in an average year, it said.
受灾人口主要分布在15个国家，以印度、孟加拉共和国、中国、越南和巴基斯坦为首，占到全球每年受灾人口的80%。
The average citizen in the developed world uses over 155kg of paper per year.
发达国家中普通公民每年的用纸量超过155公斤。
Victoria Falls has had above average levels of rainfall this year.
维多利亚瀑布今年的降雨量高于平均水平。
The price of a PC has fallen by an average of 25% a year since 1982.
1982年以来个人电脑的价格平均每年下降25%。
400 people a year die of this disease on average.
平均每年有400人死于这种疾病。
The average German will enjoy 40 days' paid holiday this year.
德国人今年平均将享有40天带薪假期。
Economic growth is expected to average 2% next year.
明年经济增长预计平均可达2%。
Nowadays, American kids on average receive about $800 per year in allowance.
现在，美国孩子平均每年得到大约800美元的零用钱。
Seattle gets an average of a mere seven days a year with thunder.
西雅图平均每年只有7天会打雷。
For the farmer who takes care to keep them cool, providing them with high-energy feed, and milking them regularly, Holstein cows are producing an average of 2,275 gallons of milk each per year.
对于那些照顾它们保持凉爽，给它们提供高能量饲料和定期挤奶的农场主来说，荷尔斯坦奶牛平均每年能产2275加仑的牛奶。
It should be noted, however, that a donkey, which at 20,000 Tanzanian shillings costs less than a bicycle, is still an investment equal to an average household's income over half a year.
然而，应该指出的是，一头驴的费用为2万坦桑尼亚先令，比一辆自行车还便宜，但它仍然是一项投资，相当于一个普通家庭半年以上的收入。
The IQ of the children in the two musical groups rose by an average of seven points in the course of a year.
在一年中，两个音乐小组中的儿童智商平均提高了7分。
In any given year, about a dozen known comets come close to the sun in their orbits, the average person can't see them all, of course.
在任何一年中，大约有十几颗已知的彗星在其轨道中接近太阳。当然，一般人看不到所有的彗星。
A global study looked at the average height of 18-year-olds in 200 countries between 1914 and 2014.
一项全球研究调查了1914年至2014年间200个国家的18岁青年的平均身高。
For anyone who doubts that the texting revolution is upon us, consider this: The average 13-to 17-year-old sends and receives 3,339 texts a month—more than 100 per day, according to the Nielsen Co.
如果有人对短信革命的到来表示怀疑，那就想想看：据尼尔森公司的数据，13至17岁的人平均每月收发3339条短信——每天超过100条。
For example, 65-year-old women with fewer than eight years of schooling are expected, on average, to live to 82.
例如，受教育少于8年的65岁女性，平均预期寿命为82岁。
Jo is a fifteen-year-old girl. She is average at her high school work and she is involved in school tennis in summer and netball in winter.
乔是个15岁的姑娘，中学的学习成绩一般，她参加了学校夏季网球和冬季的无板篮球活动。
The startling finding was that the average Medicare patient saw a total of seven doctors—two primary care physicians and five specialists—in a given year.
令人吃惊的发现是，医保患者一年内要看7名医生——2名初级保健医生和5名专科医生。
Every day Chinese people use different digital devices like mobile phones, personal computers or iPads for 100.41 minutes on average, 15.5 percent higher than the year before.
中国人平均每天使用不同的电子设备如手机、电脑或 ipad 100.41分钟，这一数据比前一年高出15.5%。
Last year was the warmest year on record, with global temperature 0.68℃ above the average.
去年是有史以来最热的一年，全球气温比平均气温上升0.68度。
Last year was the warmest year on record, with global temperature 0.68℃ above the average.
去年是有史以来最热的一年，全球气温比平均气温上升0.68度。
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