由于蚊子和鸟的作用，该病毒在人口密集的地方传播开来，这样当地人被携带了病毒的蚊子叮咬过后感染该病毒的几率就增大了。
The mosquitoes and birds responsible for West Nile’s spread abound where people also live, raising the odds that a mosquito that picked up the virus feeding on a robin could transmit it to a person.
高铁是减少航空旅行和碳排放的好途径，尤其在象中国这样的地方，它们连接了人口密集但偏远的地区。
They are a good way to cut air travel and carbon emissions, particularly where, as in China, they connect dense but distant population clusters.
旧金山地震造成更多的破坏，他发生在人口密集地方。
But the San Francisco quake caused more damage because it struck in a place where there were so many people living.
很难知道海龟是否像纽约这样的地方哪里的生态环境适合海龟，因为这里人口密集且有许多攻击性物种。
It's hard to know where turtles fit into the ecosystem of a place like New York City, rife with pollution and a melange of invasive species.
上个月拍摄的这些图片展示了世界上人口最密集的一些地方以及其他一些荒无人烟的地方。
The pictures, taken in the last month, show some of the most populous areas of the world and others that are completely uninhabited.
勘探页岩同样需要在很多地方钻井，但是相比美洲大片的开阔地域，欧洲大陆人口密集，所以在欧洲钻井勘探可不是一件容易的事。
Exploiting shale also requires drilling lots of wells-something that might prove harder in densely populated Europe than in America's wide-open Spaces.
下一个死亡率最高的是人口密集的地区，这些地方要养活幸存者也是无法做到的。
The next highest die-off will be in heavily populated areas where feeding the survivors simply cannot be done.
下一个死亡率最高的是人口密集的地区，这些地方要养活幸存者也是无法做到的。
The next highest die-off will be in heavily populated areas where feeding the survivors simply cannot be done.
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