斯坦福大学的研究者们提出的这项假设发人深思，甚至出人意料。 他们所说的基因控制了一种被称为自然杀手细胞(NK细胞）的白血球细胞。
The genes in question control a type of white blood cell known as natural killer cells, or NK cells.
干旱往往没有像其他自然灾害一样得到人们很大的重视，但它可以也是一个杀手。
Drought often doesn't get as much attention as other natural disasters, but it can be a killer.
好几部好莱坞大片都曾经把它作为拍摄背景：从五十年代的《联合车站》(自然，指的就是它)，到八十年代的《银翼杀手》，再到九十年代的《星际迷航8：第一接触》。
It has served as a backdrop for many Hollywood films, from "Union Station" (naturally) to "Blade Runner" and "Star Trek: First Contact".
世界自然保护联盟红色名录已经将北极熊确定为渐危物种之一，将全球气候变化定义为影响北极熊栖息地改变的“潜在杀手”。
The IUCN red list identifies polar bears as a vulnerable species, citing global climate change as a "substantial threat" to their habitat.
自然，他手上的那枚天价的戒指也不翼而飞，必定是被杀手一并带走了。
Naturally, he had the hands of rocket sky-high price of the ring is also missing, was killer must be taken away.
杀手就利用这个自然反应，上前用掌跟部位全力击打对方的下巴，通常的结果会是一个断掉的脖子。
The hitter then used this natural reaction to come up FULL FORCE with a "heel of hand" blow under the chin. Result was usually a broken neck.
受过良好的教育，人们将能够建立一个更好的社会来与大自然相协调，可能就可以结束来自三大杀手引起的死亡和痛苦。
With better education, people will be able to build a better society in harmony with nature and perhaps put and end to the death and suffering caused by the big three.
受过良好的教育，人们将能够建立一个更好的社会来与大自然相协调，可能就可以结束来自三大杀手引起的死亡和痛苦。
With better education, people will be able to build a better society in harmony with nature and perhaps put and end to the death and suffering caused by the big three.
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