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...
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...
我们在报头刊登这些奖章的图片。We carry illustrations of these medals on our masthead.IPv6采用24字节固定长度的报头.IPv 6 uses a header with a fixed size of 24 bytes.IPX报头 中的传输控制字段保留何种信息)?The Transport Control field in the IPX header holds what inf...
丙氨酸在转氨作用中似乎是更好的氨基酸.Alanine appears to be the preferred amino acid in the transamination.标记的莽草酸迅速地转变成苯丙氨酸.Labelled shikimic acid is reality converted to phenylalanine.植树细胞中丙氨酸和亮氨酸 、 缬氨酸的主要前体是丙酮酸.In plant cells the princip...
She had an impeccable aristocratic pedigree.她有纯正的贵族血统。She had impeccable taste in clothes...她的穿衣品位无可挑剔。He has an impeccable sense of timing...他有着无可挑剔的节奏感。He dressed well and had impeccable manners.他衣冠楚楚，待人接物无可挑剔。Her acad...
会上发言者的一句话让我思绪飘远。A phrase from the conference floor set my mind wandering.一些发言者认为拳击的危险性比橄榄球运动小。Some speakers argued that boxing was less dangerous than rugby.几位发言者批评他的新方案不够清楚明确。The speakers criticised his new programme fo...
Satire is a lonely and introspective occupation.讽刺是一项孤独而又内省的工作。This matter forces me to become introspective.这件事迫使我变得自省。He allowed his works to express an introspective consciousness of individual isolation.他使自己的作品表现了孤独的...
His style of singing is very virile.他演唱的风格浑厚有力.She loved the virile young swimmer.她爱上了那个有男子气概的年轻游泳运动员.She is both virile and feminine.她既有男子的气概,又有女性的娇柔....