Only a few rare species are known to produce the toxic trichothecenes.
只有一些稀有物种产生有毒的单端孢霉烯。
They are investigating the autecology and natural history of rare species.
他们正在调查稀有物种的起源和自然史。
This is a rare species of rose.
这是一种罕有的玫瑰。
这是一种稀少的鱼。
Epaulette sharks are not among the rare species.
肩章鲨鱼不属于稀有物种。
Women film directors in Hollywood are a rare species.
女性电影导演在好莱坞属于稀有物种。
So it's unlikely they're going to feed on any rare species.
因此，它们不太可能对这些珍稀物种下手。
I felt like an ornithologist looking for a rare species.
我觉得自己好像是一个正在寻找稀有物种的鸟类学家。
China's record of protecting its rare species has been desultory.
中国在保护其珍惜物种方面有着令人失望的记录。
So, it is everybody's responsibility to protect rare species.
所以，每个人都有责任保护稀有物种。
Several years ago a rare species of bird for some unknown reason.
几年前，因为某种无人知晓的原因，这种稀有的鸟绝迹了。
Biology resource, especially rare species faces more and more great challenge.
生物资源尤其是稀有物种的保护面临越来越大的挑战。
Unfortunately, such a rare species is now faced with the danger of being extinct.
不幸的是，这种稀有物种现在正频临灭绝的危险。
Unfortunately, such a rare species is now faced with the danger of being extinct.
不幸的是，这种稀有物种此刻正频临灭绝的危险。
With luck, scientists can help the rare species avoid their own journey to Ka Lae.
幸运的是，科学家可以帮助珍稀物种避免自己旅途到达卡莱城。
This species is extremely rare.
这一物种极为罕见。
Certain species will probably become very rare.
某些物种可能会变得非常稀少。
The herbicide might damage populations of certain rare plant species that the lake contains.
除草剂可能会破坏湖泊中某些稀有植物的种群。
Some residents voiced concern that the rice could threaten certain species of rare migratory birds.
一些居民担心这种大米会威胁到某些稀有候鸟的生存。
But white tigers are rare genetic mutations, not a different species.
但白虎仅仅是一种罕见的遗传变异，而不是一个不同的品种。
Or existing as very rare social parasites in the nests of other species.
或者以非常罕见的群居寄生虫形式生活在其他物种巢穴中的蚂蚁。
They are a very rare sub-species of giraffe.
沃本野生动物园市场拓展部经理谢丽尔·威廉姆斯12日对媒体表示："罗特希尔德长颈鹿是长颈鹿中非常珍稀的一个亚种。
Normal chromosome pairing between most species and n. Tabacum is rare.
大多数的种与红花间的正常染色配对是少见的。
The messages also help researchers learn more about this rare and elusive species.
这些消息也有助于研究人员更多地了解这种稀有和隐匿的物种。
This species is uncommon or rare in the mountains of far W and NW China.
本种是在远的W和西北部的中国的山稀有的罕见的或。
Human find many rare birds species and a lot of ferns here.
人类在这里发现了许多稀有鸟类、物种和大量的蕨类植物。
This species of plant is becoming increasingly rare.
这个植物种类正在变得日渐稀有。
It's a rare tree species left from the Fourth Glacier Age.
它是第四纪冰川运动幸存下来的珍贵树种。
We can see a number of rare and endangered species breeding here.
我们可以看到一些稀有的濒临灭绝的物种在这里繁衍生息。
We can see a number of rare and endangered species breeding here.
我们可以看到一些稀有的濒临灭绝的物种在这里繁衍生息。
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