结果 泄殖腔发育过程中,胎龄15d前 的正常鼠胚, 尿直肠隔将 泄殖腔 分为腹侧的尿生殖窦和背侧的直肠两部分, 二者共同相通于泄殖腔管.Results In normal fetus, the urorectal septum ( URS ) descended, its distance to cloacal membrane decreased gradually.泄殖腔内有明显的环褶将肛道与尿、生殖道分开.In the cloac...
Expertly he zigzagged his way across the field, avoiding the deeper gullies.他熟练地左一拐右一拐地绕过深沟，穿过了原野。The office buildings were slightly zigzagged to fit available ground space.办公大楼为了配合可用的地皮建造得略呈之字形.The lightning zigzagged t...
The Uruguayan-born big-hitter smashed 28 aces.这位乌拉圭出生的重炮手轰出了28记爱司球。Any medical expenses not covered by ACES insurance are the sole responsibility of the parents.任何ACES保险未包括的医疗费用一律是父母的责任.The student's personal proper...