无鳃类的

Any of various primitive aquatic vertebrates of the class Cyclostomata,lacking jaws and including the lampreys and hagfishes.

鳗类，鳗无颚的各种原始水生圆口纲脊椎动物中的一种，包括七鳃鳗和盲鳗

Fairy shrimp:any of various transparent freshwater crustaceans of the order anostraca that lack a carapace and characteristically swim upside-down.

"仙虾：透明的淡水鳃足类的任何一种，无甲壳并且倒置游动。"

Fairy shrimp:any of various transparent freshwater crustaceans of the order anostraca that lack a carapace and characteristically swim upside-down .

"仙虾：透明的淡水鳃足类的任何一种，无甲壳并且倒置游动。"他会把这个城市搞得翻天复地的。

Included here are fishes having either a bony skeleton, such as a perch, or a cartilaginous skeleton, such as a shark, or those lacking a jaw, such as a lamprey or hagfish.

以具有鳍及用腮呼吸为特征的一种冷血水上脊椎动物，包括多骨骼鱼类，如河鲈；或软骨鱼类，如鲨鱼；或无颚鱼类，如七鳃鳗或八目鳗类鱼

All along peoples pay extensive attention on the origin and evolution of adaptive immunity system. Agnathans, taking lamprey as the representative, are generally thought at the edge of evolving the adaptive immunity system.

适应性免疫系统的起源与进化问题一直是人们研究的热点，以七鳃鳗为代表的无颌类脊椎动物，被普遍认为处在进化出适应性免疫系统的边缘。

Fairy shrimp:any of various transparent freshwater crustaceans of the order anostraca that lack a carapace and characteristically swim upside-down.

&仙虾：透明的淡水鳃足类的任何一种，无甲壳并且倒置游动。&

Fairy shrimp:any of various transparent freshwater crustaceans of the order anostraca that lack a carapace and characteristically swim upside-down .

&仙虾：透明的淡水鳃足类的任何一种，无甲壳并且倒置游动。&他会把这个城市搞得翻天复地的。

Primitive jawless aquatic vertebrate: lampreys; hagfishes.

原始的无颚脊椎动物；七鳃鳗；八目鳗类鱼。

Extant jawless vertebrates, represented by lampreys and hagfishes, have innate immune receptors with variable domains structurally resembling T/B-cell receptors. However, they lack cardinal elements of adaptive immunity shared by all jawed vertebrates: T/B-cell receptors and major histocompatibility complex molecules.

在以七鳃鳗和盲鳗为代表的无颌类脊椎动物中，虽然发现了与有颌类脊椎动物T细胞受体(T-cell receptors， TLRs)、B细胞受体(B-cell receptors， BCRs)可变区具有相似结构的先天性免疫受体，却从未发现有颌类脊椎动物适应性免疫系统的核心组分：TCRs、BCRs、组织相容性复合体(Major histocompatibility complex， MHC)。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。