最有害的猫科动物杀手是那些流浪猫，减少流浪猫的数量是一个持续存在的问题。
The worst feline killers are those without owners, and reducing feral cat populations is an ongoing problem.
根据预测，这样的严寒天气至少还会再持续一个礼拜，因此这个冬天有可能成为新世纪最大的野生动物杀手。
With the icy weather predicted to last at least another week, this winter could be the single greatest wildlife killer of the new millennium.
海洋世界在动物袭击驯养员致死仅几天后便恢复了杀手鲸鱼的演出。
SeaWorld has resumed its killer whale show just days after one of the animals killed a trainer there.
粗略地讲，这些动物在生态系统中所占的位置现在被海豚和杀手鲸一类的齿鲸类占据。
Roughly speaking, these animals filled the ecological niches now occupied by toothed cetaceans such as dolphins and killer whales.
通过这一不寻常的发现，恐龙专家拼凑出一个身材极小但又很可怕的食肉动物的图像，他们将造物主如此精致打造出来的杀手称为“腿上巨颚”。
The remarkable discovery has allowed dinosaur experts to piece together a picture of a diminutive but formidable predator that was so finely tuned to killing they describe it as "Jaws on legs".
这种小型甲壳类动物的壳是由一种特殊的碳水化合物壳聚糖构成的。壳聚糖是一种天然的细菌杀手。
The shells of these small crustaceans are composed of a unique carbohydrate, chitosan, that's a natural microbe fighter.
科学家和动物专家一直在寻找美国肯塔基州的一位杀手。
Scientists and animal experts have been searching for a killer in the American state of Kentucky.
科学家为对人类和野生动物均足以致命的12种疾病起了“12杀手”的绰号，它们的地域范围正在逐步扩大。
Scientists have nicknamed them the "deadly dozen" : 12 diseases, lethal to humans and wildlife, that are increasing their geographical range.
这种眼斑巨蜥看起来非常笨重，好像没什么样子，但它的确是动物界当中非常凶残的杀手之一。
The creature may look very clumsy, but pound for pound , it is one of the most ferocious fighters in the animal kingdom.
这种眼斑巨蜥看起来非常笨重，好像没什么样子，但它的确是动物界当中非常凶残的杀手之一。
The creature may look very clumsy, but pound for pound , it is one of the most ferocious fighters in the animal kingdom.
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