Crabs scuttle along the muddy bank.几只螃蟹沿着泥泞的河堤快速横行。As we walked along the seashore we saw lots of tiny crabs.我们在海岸上散步时看到很多小蟹.The fish and crabs scavenge for decaying tissue.鱼和蟹搜寻腐烂的组织为食....
He received the ewes from the lambing field.他接收了来自产羔草场的母羊.This feed is of special value in steaming up the ewes as they come to lambing.这种饲料对即将产羔的母羊补充营养很有用.Ewes are having fatter lambs, and more of them every season.母羊生下...
The superpowers pledged to maintain symmetry in their arms shipments.超级大国承诺在武器运输方面要保持数量均衡。The capsids of nearly all spherical viruses adopt icosahedral symmetry.球状病毒衣壳采用二十面体对称.The symmetry characters of quasiperiodic cry...