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1·火星绕太阳公转的周期是687天，这意味着火星上的1个地球年是687天。
Mars orbits the Sun in 687 days, which means 1 Earth year on Mars is 687 days.
2·毒性废料：3687吨（6位）
Toxic Waste: 3, 687 Tons (6th)
3·农业面积：687(千公顷)。
Agricultural area: 687 (1000 Ha).
4·我们要去温哥华。我们的班机号码是CA ？ 687。
We're going to Vancouver. Our flight number is CA - 687.
5·在比得的男主人公卡斯伯特于公元687年去世后不久，这本书被放入了他的棺材里。
Shortly after Bede's hero, Cuthbert, died in 687, the book was placed in his coffin.
6·火星绕太阳运转一次需要687个地球日，为地球年的两倍。
Mars takes 687 Earth days to travel around the sun, twice as much as an Earth year.
7·按用户数量计算，中国是世界上最大的手机市场，拥有约6.87亿手机用户。
China is the world's largest mobile market by subscribers, with some 687 million subscribers.
8·火星上的一天只不过比地球上的一天长大约40分钟，但是一年却要持续687天。
A day on Mars is only about 40 minutes longer than a day on Earth, but a year lasts 687 days.
9·该文件的大小为687 Mb，因此最好使用速度比较快的Internet连接(否则要有很大的耐心！)
The file is 687 megabytes, so you will need a high-speed Internet connection (or a lot of patience!)
10·截至8月21日，尼日利亚今年报告的病例数为159例，相比之下，去年同期病例数为687例。
As of 21 August, Nigeria had reported 159 cases for this year, compared to 687 cases for the same period last year.