Astronomers using WISE have spotted six Y-class brown dwarfs close to our sun — within a distance of 40 light-years.

天文学家使用WISE已经找到了太阳系附近的6个Y型的褐矮星——都在40光年以内。

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The evanescent wave rapidly decays with increasing distance from the interface, typically within a distance of one wavelength.

在光疏介质一边有消逝波产生，其穿透深度仅波长数量级。

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The elevation of the country is 60 m to 8848 m, all within a distance of 150 km with climatic condition ranging from sub tropical to arctic.

国家的海拔高度从60米到8848米，在仅150公里的范围内，气候条件从亚热带到寒带的变化。

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They are not allowed to smoke within a certain distance of those buildings.

VOA: standard.2010.02.18

They said there were 17 separate crashes within a distance of one mile (1.6km) on Interstate 77 near the base of Fancy Gap Mountain.

BBC: Deadly pile-up in southern Virginia

There is also an opt-in alerts feature that sends users if they come within a given distance of a friend, provided both are continuously updating their locations.

FORBES: The "Walk Past A Starbucks, Get A Coupon Sent To Your Phone" Cliche Is About To Become A Reality

As she stressed the importance of Bronglais services in a large rural area, she called on the Health Minister to maintain a network of District General Hospitals to ensure that Welsh citizens are within a safe distance of medical services.

BBC: Plaid Cymru debate