Evolution can explain why human embryos look like gilled fishes.进化论能够解释为什么人类的胚胎看起来象除去了内脏的鱼一样.Early division phase embryos may use metabolites provided by the suspensor, persistent and degenerating synergids.早期分裂时期的胚可以利用胚...
Evolution can explain why human embryos look like gilled fishes.进化论能够解释为什么人类的胚胎看起来象除去了内脏的鱼一样.A sharp demarcation of adventive embryos from zygotic embryos cannot be drawn.不定胚与合子胚之间不能划分出明显的界限.Most grass embryos have a fla...
这些火焰造成了对流漏斗，把许多微粒抛向上层大气。These fires create convection funnels, and throw a lot of particles into the upper atmosphere.这漏斗的顶上接了一根管子.The top of the funnel is connected to a tube.始新统砂层的 漏斗形 自然电位曲线形态很明显.The funnel - shaped s...
But the company can be a harsh overlord to its crofters.但是公司对其佃户和工人可以作威作福,苛刻异常.Asking around, he discovered that land speculators were buying land from innocent crofters.各处调查后, 他发现土地投机商正向头脑简单的佃户购进田地....
每个学生一学期可能要修四五门课程.A student will probably attend four or five courses during each semester.学校的管理机构一学期开一次会.The shool governing body meets once a term.它可用作一学期的教材.It is designed as a textbook for a one - term course....