在脊椎动物中，免疫系统提供了对体内寄生虫的多重防御。
In vertebrates, the immune system provides a multiple defense against internal parasites.
它们对脊椎动物没有直接毒性作用。
脊椎动物的大脑正是这样的复杂功能模块。
The vertebrate brain is the most complex example of a modular system.
泥盆纪末期是脊椎动物出现很的关键时期。
大象属于那种脊椎动物?
另外，脊椎动物数量已减少了百分之三十。
Moreover, the number of vertebrates has been reduced by 30 percent.
没有发现有松鼠猎取脊椎动物，或者以肉为食。
No squirrels are known to hunt vertebrates, or even scavenge meat.
节肢动物是无脊椎动物中的大家族。
这种海洋无脊椎动物是海洋生物链中重要的一环。
The Marine invertebrates are important links in the Marine food chain.
海葵是无脊椎动物，有一千多个品种。
它还将杀死无脊椎动物和植物的生活。
某些脊椎动物(像蛇或鱼)身体的下部。
The underpart of the body of certain vertebrates such as snakes or fish.
这个巨大的传播无脊椎动物可以达到4英尺长。
水母是无脊椎动物。
原肠作用是脊椎动物早期胚胎发育的关键事件。
Gastrulation is an essential event during early embryo development.
脊椎动物的进化是自然史上最伟大的故事之一。
The evolution of animals with backbones is one of the greatest stories in natural history.
产品说明肌酸存在于脊椎动物，为肌肉供应能源。
DESCRIPTION CREATINE is present in vertebrates and helps to supply energy to muscle.
狗是脊椎动物。
心脏是脊椎动物器官发生过程中最早形成的器官之一。
The heart is one of first organs to form during organogenesis in the vertebrate.
心脏是脊椎动物器官发生过程中最早形成的结构之一。
The heart is one of first structures to form during organogenesis in the vertebrate.
公园里的本地特有的脊椎动物和无脊椎动物也很多。
Endemism of vertebrates and invertebrates is also very high.
心脏是脊椎动物器官发生过程中最早形成的结构之一。
The heart is one of first structures to form during organogenesis invertebrate.
海底各种五颜六色的鱼类和一些无脊椎动物清晰可见。
We could easily see the colored fishes and invertebrates at the bottom of the sea.
亚硝酸盐是一种有毒物质，对鱼类和无脊椎动物有毒。
Nitrite is a substance that is toxic to fish and invertebrates.
脊椎动物的出现是动物进化历史上一次质的 飞跃。
The origin of the vertebrates is one of the most important transitions in animal evolution.
脊椎动物的起源与演化历来是进化生命科学的核心命题。
The vertebrate origin and evolvement has always played core role of evolution and life science.
普通章鱼的神经系统比大多数无脊椎动物都要更加庞大和复杂。
The nervous system of this common octopus is larger and more complex than most invertebrates.
普通章鱼的神经系统比大多数无脊椎动物都要更加庞大和复杂。
The nervous system of this common octopus is larger and more complex than most invertebrates.
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