精

Two polar nuclei move to the micropylar end before sperm is released in a gap between the egg cell and central cell and subsequently taking off cytoplasm one after another. The sperm nucleus moving to the egg nucleus runs faster than the one to the polar nuclei. It fuses with the polar nuclei that are moving towards the antipodal cells at the chalazal end.

精子释放前，两极核移向卵细胞的合点端；两精子释放于卵细胞与中央细胞的间隙后，先后脱去细胞质，然后分别移向卵核和极核，移向卵核的精核快于移向极核的精核；精核与两极核在向反足细胞团方向移动的过程中完成雌雄核融合。

Two polar nuclei move to the micropylar end before sperm is released in a gap between the egg cell and central cell and subsequently taking off cytoplasm one after another. The sperm nucleus moving to the egg nucleus runs faster than the one to the polar nuclei. It fuses with the polar nuclei that are moving towards the antipodal cells at the chalazal end, Images showed the fusion process of male and female nuclei and polyspermous fertilization.

精子释放前，两极核移向卵细胞的合点端；两精子释放于卵细胞与中央细胞的间隙后，先后脱去细胞质，然后分别移向卵核和极核，移向卵核的精核快于移向极核的精核；精核与两极核在向反足细胞团方向移动的过程中完成雌雄核融合。

On the D110, when mean total length reached about 86.5±5.9 mm, ovarian cavity grew bigger, and oocytes were firstly detected. Differentiation of testis was firstly observed in juvenile flounder with mean total length of 63.5±3.4 mm on the D90 when spermatogenous cell proliferated rapidly and spermaduct formed.

在90日龄、平均全长为63.5±3.4 mm的雄性牙鲆中，精原细胞快速增殖，并观察到了输精管结构；进一步的细胞学分化则出现在100日龄、平均全长为76.0±8.6 mm的个体中，此时可以看到精小叶的形成；在平均全长为140.0±15.2 mm时，精巢中出现初级精母细胞，标志着性腺分化的基本完成。

Objective: To compare the value of internal spermatic vein high ligation by laparoscopy and open operation for Spermophlebectasia.

目的对比评价腹腔镜精索静脉高位结扎术和开放手术经腹膜后精索静脉高位结扎术治疗精索静脉曲张的临床应用价值。

The spermatogenesis in worker included spermatogonia, primary speramtocyte, second spermatocyte and spermatid, but mature sperm was not found.

工蚁精子的发生过程包括精原细胞时期和精母细胞时期，并形成了精细胞，但未形成精子。

The spermatogenesis includes five stages: spermatogonium、primary spermatocyte、secondary spermatocyte、spermatid and spermatozoon.

雄体的生殖细胞发生经历精原细胞、初级精母细胞、次级精母细胞、精子细胞和成熟精子五个时期。

Its development as follows: spermatogonia → primary spermatocyte secondary spermatocyte →→→ sperm sperm cells.

其发育过程为：精原细胞→初级精母细胞→次级精母细胞→精子细胞→精子。

Immunohistochemistry for HIF-1α: HIF-1αexpression was detected in germ cell cytoplasm cytoplasm, obviously spermatocyte,and was detected in nucleus of seminiferous tubule theca cell too.

免疫组化观察HIF-1α的表达情况： HIF-1α表达主要见于生精细胞的细胞质，以精母细胞明显，也见于曲细精管外周膜细胞的胞核。

The spermatogenesis includes five stages: spermatogonium、primary spermatocyte、secondary spermaticyte、spermatid and spermatozoon.

雄体的生殖细胞发生经历精原细胞、初级精母细胞、次级精母细胞、精子细胞和成熟精子五个时期。

While under the ultrastructure, the spermatogonium can be distinguished as primary spermatogonium and secondery spermatogonium; in addition, the mature sperm has a head, a midpeice and a tail, and the "9+3" canaliculus tail has side fin in it.

超微结构下精原细胞分为初级精原细胞和次级精原细胞，成熟精子分头部、中片和尾部3个部分，尾部有侧鳍，具"9+3"式微管结构。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷