除了中国，英国和日本也使用11位数字的手机号码。

Besides China, Britain and Japan also use 11-digit mobile phone numbers.

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例如，美国的邮政编码是五位数字加上可选的“4个”限定号码，后者由连字符和四位附加数字组成。

For example, a U.S. ZIP code is five digits plus an optional "plus 4" qualifier composed of a hyphen and four additional digits.

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提到“ Seven ”当然不会只是因为数字7代表好运气：很有可能源于当年贝克·汉姆效力于曼联和英格兰国家队时他所使用的号码是7。

It's fairly certain that "Seven" is about more than good luck: the name likely refers to Beckham's number when he played for Manchester United and England's national soccer team.

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with someone else who's standing next to you, you're going to sum your numbers together and one of you whoever is fastest probably is going to sit down and the other person is going to take on his or her number, the summation of those numbers; and then you're going to repeat and if you follow the logic here in just a few moments, there should be just one of you very awkwardly standing.

你们需要与站在你下面一个的你结成一对,把你们的数字相加,你们中最快的那个可以坐下,其他人将接着他的那个号码继续进行，计算这些数字的和，以此重复,如果你们遵循了这一逻辑，最后将只有一个人呆呆地站着。

哈佛公开课 - 计算机科学课程节选