A new study found better results in four-year-olds who go to bed around the same time every night and sleep at least eleven hours.

VOA: special.2010.06.09

But it's amazing, that every year you find somebody coming up with a way of going around the second law and somehow convincing people who are very smart that this will work.

但是很令人惊奇，每年你都能发现,有人宣称找到了,绕过第二定律的方法,还不知怎么地就说服了,一些非常聪明的人,让他们以为这个真的管用。

麻省理工公开课 - 热力学与动力学课程节选

Around three hundred fifty teenage mothers graduate from Covenant House's Mommy and Me class every year.

VOA: special.2010.05.13

But the council says that is because the test can be taken almost every day of the year at more than 400 centers around the world.

VOA: special.2009.01.08

UNICEF deals with about two hundred emergencies around the world every year.

VOA: special.2010.02.15

Every year,UNICEF responds to some 200 emergencies around the world.

VOA: standard.2010.02.04