The author of the attack is still unknown.

仍然没有锁定此事件幕后元凶。

It would cause it to heat improperly.

这就是杰森脖子上烫伤元凶。

Medical researchers suspected the deadly Marburg virus to be the culprit.

医学家曾怀疑高危马尔堡病毒是元凶。

DNA analysis revealed that Micrococcus bacteria were to blame.

而经DNA分析表明微球细菌是臭味元凶。

China says the United States is the biggest culprit in the world's refugee crisis.

中国表示，美国是世界难民危机最大元凶。

The Boko Haram terrorist group was blamed for the abductions.

博科圣地恐怖组织被认为是绑架事件元凶。

You just heard that Boko Haram is the group responsible for the kidnapping.

你是听说博科圣地集团是这绑架事件元凶。

Diarrhea, pneumonia and malaria are the leading causes of death among young children in Ethiopia.

腹泻、肺炎和疟疾是导致埃塞俄比亚儿童死亡主要元凶。

The group was behind the recent attack on Nairobi's Westgate mall.

该集团是最近内罗毕韦斯特盖特购物中心事件幕后元凶。

Climate change. It's the culprit behind an increase in droughts and floods, wildfires and storms.

气候变化——干旱和洪水、野火和风暴增加背后元凶。

We support all efforts to bring those who ordered Munir assassinated to account.

我们支持所有将暗杀慕尼尔元凶们揪出所有努力。

Authorities say, they don't know who's responsible for the deaths of the McClelland's and Hasse.

当局表示还不知道造成麦克利兰和哈斯死亡元凶是谁。

They said either South Africa or Renamo caused the crash.

他们说，南非和莫桑比克全国抵抗运动都不是此飞机失事元凶。

As waste and disease piled up, Romans pointed to the stink as the cause of sickness.

随着废物和疾病堆积，罗马人发现臭味是疾病产生元凶。

It is hay fever, an allergic reaction to pollen from trees, grass and other plants.

元凶其实是花粉过敏症，这是人们对草木以及其他植物花粉产生过敏反应。

And I might be able to find one of the culprits down here, although they're quite tricky to spot.

我也许能找到其中一个元凶，虽然要找到它们有点棘手。

So was this the dinosaur responsible for the gash marks on the bones found at the Colorado site?

那么在科罗拉多石场找到骨头上沟痕元凶是不是就是这种恐龙呢？

Could emulsifiers cause the same health consequences in humans and be behind some of the obesity trend?

而对于人类而言乳化剂是否会引发同样健康问题并且是造成肥胖幕后元凶?

Now, that's the terrorist group that was responsible for last month deadly attack in the shopping mall in Kenya.

现在, 这一恐怖组织就是上个月肯尼亚购物中心致命元凶。

Methane gas, one of the culprits of global warming, is, ironically, a by-product of wet lowland rice cultivation.

具有讽刺意味是，全球变暖元凶之一，甲烷，居然是低洼湿地水稻农业副产物。