由细胞组成的

The epidermis consists of a single cells.

表皮是由几种不同种类的细胞的单层所组成的。

The middle germinal layer of an early embryo, consisting of undifferentiated cells destined to become the ''.

中胚层早期胚的中间胚芽层，由最终将发育成中胚层的未分化细胞组成

The middle germinal layer of an early embryo,consisting of undifferentiated cells destined to become the mesoderm.

中胚层早期胚的中间胚芽层，由最终将发育成中胚层的未分化细胞组成

The retina is composed of rods and cones, two different kinds of light-sensitive elements.

视网膜是由棒状的和圆锥状的细胞组成，它们两种不同的感光元素。

The middle germinal layer of an early embryo,consisting of undifferentiated cells destine d to become the mesoderm.

中胚层早期胚的中间胚芽层，由最终将发育成中胚层的未分化细胞组成

It can increase the synthesis of protein and nucleic acid and promote proliferation and differentiation of cells.

EGF是由53个氨基酸组成的单链多肽，能增加核酸和蛋白质的合成，从而促进多种细胞的增殖与分化。

In the transverse cross of the stem,the pericycle composed of stone cells was observed.

茎的横切面的显微特征中，维管柱鞘由一列石细胞组成。

Phellem A protective layer of radically arranged cells produced to the outside of the PHELLOGEN.

木栓：指由木栓形成层外侧的一系列细胞所组成的保护层。

Organism:An individual form of life, such as a plant, an animal, a bacterium, a protist, or a fungus; a body made up of organs, organelles, or other parts that work together to carry on the various processes of life.

有机生物：一种个体生命形式，如植物、动物、细菌、原生生物或者真菌；一个由有机器官、细胞器或其它部件组成的并在一起共同运作以进行生命历程的整体

The tumor was composed of large polygonal cells with abundant basophilic granular cytoplasm.

肿瘤由较大的多边形细胞组成，胞浆内含有丰富的嗜碱性颗粒。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。