T-ball games at the White House will take place each month during the baseball season for the next four years.
球运动会在下一个四年的棒球赛季每个月在白宫举行。
Russia's Sukhoi T-50 prototype stealth fighter made its maiden flight last year and is due to enter service in about four years.
俄国的苏霍伊t - 50隐形战机原型去年刚进行了首次试飞,预计将在4年后服役。
Four other global companies from France, Russia, and the European Union are in the race for t he world's richest fighter jet deal in 16 years.
来自法国、俄罗斯以及欧盟的四家全球公司也在同时竞争这份16年来世界最大的喷气式战斗机合同。
"We don't want to come here two years later, three years later,or four year later to again talk about the extremism,terrorism, drugs,and so on and so forth,".
VOA: standard.2009.03.27
He didn't want anybody watching him because he hadn't driven a car in four or five years.
他不想任何人看着他,因为他已经四五年没开过车了。
I'm sixty-four years old and I haven't had one second of genius in my entire life.
我已经六十四岁了,这辈子都没有哪怕一秒钟灵光乍现的时候
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