Even if bacteria did arrive on Earth from Mars, they must have died out.
即使细菌真的从火星来到地球，它们也一定已经灭绝了。
Humans, as we know, have always lived in groups; without this arrangement, our species would have died out long ago.
我们知道，人类一直是群居的；如果没有这种安排，我们的物种很早之前就灭绝了。
Many old customs have died out.
许多旧的风俗已不复存在。
Some animals here have died out.
这里有些动物已经灭绝了。
这类动物已经绝种了。
Many animals have died out over the past years.
在过去几年间，许多动物灭绝了。
Many species have died out as a consequence of man's activities.
由于人类的活动，许多物种已经灭绝了。
Many traditional customs have died out because they are out of date.
因为已经过时，许多传统风俗正逐渐消失。
Many animals have died out for the cause of much killing and hunting.
很多动物已经由于过度捕杀而灭绝。
Throughout Earth's history, thousands of species of species of animals have died out.
贯穿地球的历史，成千上万的物种已经灭绝。
It probably does work at least some of the time, or the practice would have died out.
它很可能有效至少在某些时候，否则这种做法早就会消失了。
We know many other wild plants, animals, insects and birds have died out more recently.
我们知道很多其他野生植物，动物，昆虫和鸟类最近已经灭绝。
Older stud books list roan as an Akhal-Teke color, although this line seems to have died out.
旧螺柱书籍作为阿克哈·塔克马的颜色列表罗安，虽然此行似乎已经死了。
Competition is good; without it we wouldn't just be unhappy, we would have died out long ago.
竞争是有益的，如果没有竞争，我们不仅不会幸福，人类可能很早以前就已经灭绝了。
Many of the earth's plants and animals have died out, and several other species are endangered.
地球上的许多动植物已经灭绝了，其他的一些物种也正濒临灭绝的危险。
If influenza was only contagious after symptoms appear, it would have died out thousand of years ago.
如果流感只是在症状出现后才会感染，那它早该在几千年前就消失了。
Second, companies are exerting greater control by building “walled gardens”—an approach that appeared to have died out a decade ago.
其次，企业通过“围墙花园”这一十年前就已经绝迹的手段加大控制力度。
But in the Hudson, fish with the gene to make the mutant receptor have thrived, while those without it have died out, Wirgin notes.
在哈德逊河中，拥有变异基因的鱼类蓬勃发展，那些没有变异基因的鱼都已经死光光了。
Second, companies are exerting greater control by building "walled gardens" -an approach that appeared to have died out a decade ago.
第二，公司施加更严格的管制，通过“围墙花园”——一种似乎十年前就已经绝迹的方式。
Several bone carvings showed reindeer running, though reindeer were thought to have died out in that part of France 10,000 years earlier.
几块骨头上刻有驯鹿奔跑的图画，尽管法国的这块区域上的驯鹿被认为在一万年前就消失了。
Now a rare 'lost' species of the plant, thought to have died out 50 years ago, is causing a buzz after being unearthed at a country house in Dorset.
这种物种被认为50年前就已经灭绝了，现在又在多西特的一个乡村住宅里被发现，自然会引起大家的热烈讨论。
Man On Earth, a Channel Four documentary starting today claims that without the last great global warming 120, 000 years ago our ancesters would have died out.
四频道今天开播的《地球上的人类》声称，没有12万年前大规模的全球变暖，我们的祖先已经灭绝了。
The black kokanee, or "kunimasu" in Japanese, was thought to have died out in 1940, when a hydroelectric project made its native lake in northern Akita Prefecture more acidic.
黑科卡尼，日语又称“kunimasu”，在1940年就被认为已经灭绝，那时秋田县北部的一个水电项目使得那里的天然湖波水质酸化。
Millions of bees have died in South Carolina during aerial insect spraying operations that were carried out to combat the Zika virus.
为了对抗寨卡病毒，南卡罗莱纳州开展了空中喷洒灭虫的行动，导致数百万蜜蜂死亡。
No further details have been released but the News of the World reported that he died after a night out.
目前没有进一步的消息，但据《世界新闻报》报道他在外出一夜后死亡。
No further details have been released but the News of the World reported that he died after a night out.
目前没有进一步的消息，但据《世界新闻报》报道他在外出一夜后死亡。
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