The attractive force decreases with the distance in the same proportion as light, which, we saw a little while ago, decreases in intensity as the square of the distance increases.

引力随距离减少的程度，跟光线随距离减弱有相同的规律，这个规律我们不久前刚刚讲过，即强度的减弱跟距离的平方成正比。

youdao

As the transmission length reaches a certain distance, DC transmission becomes economically attractive over ac.

当输电距离足够长时，直流输电的经济性将优于交流输电。

youdao

One study found that oxytocin led men in monogamous relationships to keep a greater distance between themselves and an attractive woman during an initial encounter.

研究发现催产素可以让一夫一妻制关系中的男人在与其他女人第一次邂逅保持距离。

youdao

And dark energy may turn out to be almost the mirror opposite of gravity - a repulsive rather than an attractive force, and one that strengthens with distance rather than weakening.

BBC: Getting the measure of dark energy

Long-distance pipelines, easily sabotaged, will prove attractive targets to Uighur guerillas.

ECONOMIST: Central Asia

So Qwest's best scenario may be a two-part play, breaking up its local and long-distance businesses and reducing debt along the way to make the remaining pieces more attractive.

FORBES: Call It Quits, Qwest