另外还有地理因素：这些国家彼此都非常接近，从发射到目标，一个带核弹头的导弹的飞行时间只要几分钟。

There's also the geographic factor: These countries are very close to one another; a nuclear-armed missile's flight time, from launcher to target, is a few minutes.

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比如，如果你想在网上做生意，你可能得花很多时间处理邮件，但是这件事并不能让你接近目标。

For example, if you’re building an online business, you can spend all the time you want checking email, but it won’t get you closer to the goals that truly matter in your life.

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在不到三年的时间内，发放的蚊帐数目已非常接近2008年确定的3.5亿顶的目标。

In less than three years, the number of nets distributed has come tantalizingly close to the target of 350 million set in 2008.

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