Meanwhile, the deadliest strains of the virus perished with their hosts as natural selection favored strains that could infect hosts but not kill them.
同时，由于自然选择更倾向于选择那些能够感染宿主但不致其死亡的病毒，这种致命病毒便随着宿主的死亡而消失。
It is, she read, the deadliest of all the tick-borne illnesses.
她读到，这是所有的壁虱传播的疾病中最致命的一种。
But some of the deadliest earthquakes are the ones that create fires.
但最致命的一些地震在于它们能导致火灾。
About 60, 000 people were killed in one of the deadliest earthquakes to hit South Asia.
这个在南亚发生的最致命之一的地震使60000人丧生。
The U. S. Civil War began 150 years ago this week and became the deadliest conflict in U.
美国内战开始于150周年前的这个星期，成为美国历史上伤亡最惨重的冲突。
Sometimes, delay is the deadliest form of denial.
有时候，拖延其实就是最彻底的拒绝。
It was the deadliest medevac accident to Maryland in forty years.
这是四十年里马里兰发生的最致命的救伤直升机事故。
Launched on September 8th 1941, the siege was the deadliest in history.
1941年9月8日开始的围城战是历史上最致命的。
This sounds like a quirky Trivial Pursuit answer — what is the deadliest garment in history?
这听起来像一道智力题的离奇答案——历史上最致命的穿戴物是什么？
More than two Britons under 35 are diagnosed with the deadliest form of skin cancer every day.
每天，至少有两个35岁以下的英国人被确诊患上最致命的皮肤癌。
Lung cancer may be one of the deadliest forms of cancer, but it's also one of the most preventable.
肺癌或许是最致命的癌症，但是也是最具预防性的。
The conceited, arrogant feeling of pride has been called the deadliest of the seven deadly SINS.
傲慢自负的骄傲感已经被称作七宗原罪中最致命的一种。
One of the deadliest habits that chip away at children's self-confidence is any form of stereotyping.
而蚕食孩子自信的最致命的习惯之一就是各种形式的老套成见。
Mosquitoes transmit the parasite, Plasmodium, that causes malaria, one the deadliest diseases on Earth.
蚊子传播疟原虫，引发疟疾，是一种致死性强的世界性疾病。
What Happened: he was intent on discovering a cure for one of the deadliest diseases in the world, malaria.
经过：帕金斯一心一意想要找出治疗疟疾这一世上最致命的疾病的方法。
A rapid drop in oxygen and extraordinarily cold conditions would be just two of the deadliest consequences.
两个最致命的后果是氧含量的快速下降和极冷的条件。
Even if one USES the low estimate of 6, 000 victims, this storm remains the deadliest ever to hit the U.S. coast.
即使采用最低遇难者的估计数6,000人，这场风暴依然是有史以来袭击美国海岸最致命的一次风暴。
Research suggests that it may protect against colon cancer as well as melanoma, the deadliest form of skin cancer.
研究还表明，姜黄可以预防结肠癌以及恶性最大的皮肤癌——黑色素瘤。
Malignant glioma is among the deadliest types of brain cancer for which there currently is no effective treatment.
恶性胶质瘤是脑癌中最致命的类型，目前对此尚无有效的治疗方法。
In January, one of the deadliest earthquakes in history struck Haiti, already the poorest country in the Western hemisphere.
一月，历史上造成伤亡最惨重的地震之一袭击了海地这个已是西半球最贫穷的国家。
If there are no survivors it would be the world's worst aviation disaster since 2001, and the deadliest in Air France's 75-year history.
如果没有幸存者，那么这将是自2001年以来世界上最严重的空难，也是法航75年历史中最严重的空难。
Although getting a tan looks great, prolonged exposure can increase the risk of developing melanoma - the deadliest form of skin cancer.
虽然皮肤黝黑也不错，但长期暴露在阳光下会增加黑色素瘤出现的风险，这是最严重的皮肤癌。
Rather, it is the fact that botulinum neurotoxin, in its pure form, is "the deadliest substance known to science," according to Coleman and Zilinskas.
据科曼和西林萨克斯说，是因为“高纯度的肉毒毒素是目前科学已知的最致命的毒素”。
A passenger plane has crashed into a remote hillside near Pakistan's capital, killing all 152 people on board, in the deadliest crash ever in the country.
一架载有152名乘客的飞机在巴基斯坦首都附近的偏僻山区坠毁，机上人员全部身亡。这是巴基斯坦史上最严重的坠机事件。
Heat waves rarely make lists of the deadliest natural disasters, but in modern times their death tolls have surpassed other phenomena in the United States.
热浪很少列入了最惨重的自然灾害，但在近代，在美国由此引起的死亡人数已经超过了其他的自然现象。
Melanoma is the deadliest skin cancer. Past research has shown that people who have had non-melanoma skin cancers have a greater risk of developing melanoma.
黑色素瘤是最致命的皮肤癌。过去的研究表明，得了非黑素瘤皮肤癌的患者有更大的风险演变成黑色素瘤。
Because a stationary enemy has innumerable opportunities to ambush whatever moves into the kill zone, urban assault is probably the deadliest task to undertake.
因为一个坚守的敌人拥有无数的机会伏击任何进入猎杀区的目标，进行城市进攻或许是最为危险的任务。
Exactly one year later, a magnitude 9.0 quake occurred just off the western coast of northern Sumatra, Indonesia, spawning by far the deadliest tsunamis in recorded history.
整整一年后，印度尼西亚苏门答腊北部以西的海域发生9级大地震，引发了有记录以来死亡人数最多的海啸。
Exactly one year later, a magnitude 9.0 quake occurred just off the western coast of northern Sumatra, Indonesia, spawning by far the deadliest tsunamis in recorded history.
整整一年后，印度尼西亚苏门答腊北部以西的海域发生9级大地震，引发了有记录以来死亡人数最多的海啸。
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