两天以后，他们把受精卵重新植入了我的体内。Two days later, they implanted the fertilized eggs back inside me.当受精卵植入子宫壁时，妊娠就开始了。Pregnancy begins when the fertilized egg is implanted in the wall of the uterus.非同卵双生子是两个受精卵同时在子宫内着床的结果。Non-identic...
Neither was the form of the third skull entirely erectus - like.形态上,第三个头骨也不完全像直立人.Homo erectus hunt with wooden tools?直立人是用木器打猎 吗 ?We gradually evolved from homo erectus.我们就是从直立人渐渐进化而成的....
Eastward flows the Changjiang River.大江东去.A powerful snow storm is moving eastward...一场强暴风雪正在东移。The river here tends eastward.这条河从这里向东流.The crowd is heading eastward,believing that they can find gold there.人群正在向东移去,他们认为在那...
...the European and Arab countries bordering the Mediterranean.地中海沿岸的欧洲和阿拉伯国家Mediterranean liliaceous plants; sometimes placed in family Hyacinthaceae.地中海百合科植物; 有时归入风信子科.Britain bakes in a Mediterranean heatwave.地中海的热浪炙烤...