英语翻译生命的第一周受精卵经过多次分裂,形成一个细胞团 第二周脊椎形成了,脑组织、脊髓及神经系统,还有眼睛,都具有一定的雏形 第三周 胎儿的脑部组织也就开始形成了 第四周时出现

英语翻译生命的第一周受精卵经过多次分裂,形成一个细胞团 第二周脊椎形成了,脑组织、脊髓及神经系统,还有眼睛,都具有一定的雏形 第三周 胎儿的脑部组织也就开始形成了 第四周时出现
英语翻译
生命的第一周受精卵经过多次分裂,形成一个细胞团 第二周脊椎形成了,脑组织、脊髓及神经系统,还有眼睛,都具有一定的雏形 第三周 胎儿的脑部组织也就开始形成了 第四周时出现心脏,又过1周出现肢体萌芽,眼睛、耳朵随着出现,肺、肝也开始出现雏形 胚胎至第七周时,手足开始出现手指、足趾,眼睛清晰可见,胚胎开始伸直并在羊水中活动,整个外观近似幼儿,尾巴消失.l在怀孕第8周时,神经管便渐次愈合,l第八周初：胎儿的头占整个身体的l/2,以后生长加快,l开始被称为胎儿.胚胎已近3厘米,所有的器官已初具原形.以后的几个月就只待逐渐完善了.l第九周时,男女胎儿外阴大致相似.第十二周末,已显示成熟胎儿男女外阴的形态 l第四个月(12—15周),胎儿身长为16厘米,体重大约120克,生长非常迅速.l第五个月(16—19周),孕妇就会感觉腹内胎儿在踢自己以显示他的存在,这就是胎动.l胎儿已具备听力,能听见声音,可开始进行胎教了.第六个月(20—23周),两条胳膊弯曲在胸前,两只膝盖提到腹部.第七个月(24—27周),看起来像个小老头儿.这时出生虽能有浅表的呼吸和哭泣,但仍很难存活.l第八个月(28—31周),神经系统进一步完善,肺及其它内脏已发育完成.•第九个月(32—35周末),发育基本完成.•第十个月(36—40周),胎儿发育完成,一个新生命诞生啦

英语翻译生命的第一周受精卵经过多次分裂,形成一个细胞团 第二周脊椎形成了,脑组织、脊髓及神经系统,还有眼睛,都具有一定的雏形 第三周 胎儿的脑部组织也就开始形成了 第四周时出现
Life in the first week of the fertilized egg after many division, forming a group of cells in the second week of formed the spine, brain, spinal cord and nervous system, and the eyes, have a certain shape fetal brain tissue also began to form the third week of the fourth week in the heart, weeks limb bud, with eyes, ears, lung, liver and started to shape the embryo to 7 weeks, brothers started to fingers, toes, eyes clear, embryo started to straighten and activities in the amniotic fluid, the whole appearance of the approximate infants, tail disappear.L in 8 weeks pregnancy, neural tube gradually healing, l week 8: fetal head of whole body l / 2, after growth accelerated, l began to be called a fetus.Nearly 3 cm embryos, all the parts have begun to take.After a few months only to be gradually improved.L at 9 weeks, fetal genital is roughly similar to men and women.The twelfth weekend, has shown that men and women mature fetal genital form l (12-15 weeks), the fourth month fetus is 16 cm in length and weighing about 120 grams, grow very quickly.L (16-19 weeks), 5 months pregnant women will feel internal fetal playing himself to show his existence, this is quickened.L have listening, can hear the sound, can be started in utero.6 months (20 to 23 weeks), two arms bend before the bosom, two knees referred to the abdomen.The seventh month (24-27 weeks), looks like a little old man.Then born can have shallow breathing and crying, but still it is hard to survive.L 8 months (28-31 weeks), the nervous system to further improve, lungs and other internal development has been finished.• 9 months (32-35) over the weekend, basically completed.., the first ten months (36 -- 40 weeks), fetal development is complete, a new life was born