无脊椎的

Northern crossbreed results showed that it is expressed only in human brain. This gene has a 50% amino acid sequence identity with Caenorhabdilis elegans, Anopheles gambiae sir arid Drosophila, and 94% amino acid sequence identity with Rattus norvegicus and Mus musculus.

Northern杂交结果表明：该基因只在人类大脑组织中表达，且与无脊椎动物线虫、疟蚊和果蝇的同源基因有50%的氨基酸同源性，与脊椎动物大鼠和小鼠的同源基因有50%以上的氨基酸同源性。

According to Moncrieff (1951), saltiness and sourness are more basic owing to the evolutionary development of taste from sea life: As we are descended from sea-inhabiting invertebrates we should expect the salt taste to be the most primitive, followed by the acid taste, which would function chiefly as a warning.

据Moncrieff (1951)所说，因为生命是从海洋进化而来的缘故，咸味和酸味要更基础一点：因为我们来自于海生的无脊椎动物，所以，我们把咸味作为最原始的味道，紧跟着就是酸味。因为我们把酸味作为首要的警戒味道。

Sea urchin is a kind of familiar invertebrate and main aquatic animal.

海胆是海洋中一类比较常见的无脊椎动物和主要的海水养殖动物，它的Hox基因对它动-植物轴(animal-vegetalaxis)的形成有调控作用，并对进化研究和养殖生产具有重要意义。

Sea Star, Ireland, 2005 Photograph by Brian Skerry There are some 2,000 species of sea stars, such as this striped invertebrate off Ireland's Atlantic coast, living in all the world's oceans.

意译：海星，爱尔兰，2005年。有一些物种的2000种海星，像这样的条纹无脊椎动物爱尔兰的大西洋海岸，生活在世界上所有的海洋。

" Smithers, don't you think it's ironic that your irregular night-time activities are in inverse proportion to your reputation as an expert in the area of invertebrate research?"

"斯密德斯，难道你不认为自己无规律的夜生活与你作为无脊椎动物研究领域的专家的声望成反比是具有讽刺意味的吗？"

Benthic macroinvertebrates were studied in 5 sampling sites. The results indicated the species were becoming little and little. We only inspected 2 species Tubifex sp and Tokunagayasyrida akamus, which are all eutrophicational designate species.

底栖大型无脊椎动物种类逐年减少的，2002年仅观测到寡毛类的正颤蚓和摇蚊幼虫类的大红德永摇蚊，它们均是富营养型水体的指示种类。

These data give insight into the development mechanism and evolution of the amphioxus and vertebrates.A novel gene, AmphiSom, was identified in amphioxus Branchiostoma belcheri tsingtauense, and its sequence and developmental expression pattern were determined.

因此虽然文昌鱼不是脊椎动物的直接祖先，但是它是现存的与脊椎动物直接祖先最接近的无脊椎动物，是研究动物进化和动物胚胎发育的典型材料。

The research areas cover genetic and physiological mechanisms of functioning marine organisms; principles of marine biotechnology; genetic and endocrinological mechanisms in marine fish and invertebrates; genetic polymorphism of some marine and fresh water species; biological role of bacterial bioluminescence in the marine environment etc.

其研究范围广泛，覆盖了多个学科，包括功能性海洋生物的遗传和生理机制、海洋生物技术原理、海洋鱼类和无脊椎动物的遗传和内分泌机制、海水和淡水某些生物的遗传多态性、以及海洋环境中发光细菌的生物学作用等。

Minute sedentary marine invertebrate having a saclike body with siphons through which water enters and leaves.

微小的不移栖的海洋无脊椎动物，它们的身体呈囊状并带有可吸进和吐出水的''。

Minute sedentary marine invertebrate having a saclike body with siphons through which water enters and leaves.

微小的不移栖的海洋无脊椎动物，它们的身体呈囊状并带有可吸进和吐出水的虹吸管。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！