翻译和例句：
There are about a billion (十亿) bacteria (细菌) in your mouth right now.There are about a billion (十亿) bacteria (细菌) in your mouth right now. ……
For the first time, there are moreoverweight(超重的) people than hungry people. There are about 1.1billion(十亿) overweight people in the world. ……
Days were only 18 hours long 1 billion (十亿) years ago. ……
Standing room onlyThe worldpopulation(人口) will be 9billion(十亿) by 2050, according to a recent UN report. The current figure is 6.5 billion. ……
信不信由你People around the world send about 3.5 billion (十亿) e-mails each day. ……
How oldThe moon is about 4.5 billion (十亿) years old. That’s about the same age as the Earth.How bigIf the Earth is a basketball, the moon is a tennis ball (网球). ……
VCG两百年一遇，数十亿只蝉将“入侵”美国两百年一遇，数十亿只蝉将“入侵”美国Billions of noisy cicadas take over the US PAGE 6Billions of noisy cicadas take over the US PAGE 6 ……
浩瀚宇宙为什么是黑漆漆的呢？The only light in space comes from stars. There are billions of (几十亿) bright stars. But they are very far apart (相聚很远). Between the stars is darkness (黑暗). ……
they don’t have a kind of protein (蛋白质) in their muscles (肌肉). There are almost 1.5 billion (十亿... (蛋白质) in their muscles (肌肉). There are almost 1.5 billion (十亿) people without the protein. They can ……
成长最快的黑洞，一天吃一个太阳成长最快的黑洞，一天吃一个太阳Scientists found a huge black hole. It’s 17 billion (十亿) times... a huge black hole. It’s 17 billion (十亿) times heavier than the sun! This black hole is growing by eating ……
印度将成为人口第一大国 INDIA will have more people than China by the time you are old enough to be a grandfather.The United Nations(联合国) says that there will be about 1.6billion(十亿) people in India by the year ……
minutes to travel between the two cities then.1.306 millionCHINA had 1.306billion(十亿) people ……
Bikes everywhereThere are about 1billion(十亿) bicycles in the world. About 400 million bicycles are in China. About 16 million bikes are in theNetherlands(荷兰) about 1 for every man, woman and child ……
7 billionTHE world population (人口) will hit 7 billion (十亿) in 2011, according to a US report. The number is now about 6.77 billion. If our world were a village of 100 people, then: 61 would be from ……
7billionTHE world's population will hit 7 billion (十亿) in 2011, according to a US report.The report says that about 97 percent of the growth over the next 40 years will be in Asia, Africa, Latin ……
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