名词 mollusc:

1. invertebrate having a soft unsegmented body usually enclosed in a shell

molluscn.软体动物=mollusk(美).Molluscoidea拟软体动物门molluscoides拟软体动物Molluscacides杀软体动物约molluscacidal灭螺的,灭软体动物的molluscum body软疣小体Mollusciciding灭螺molluscan cross卵裂十字molluscan larvae软体动物幼体Molluscipoxvirus软疣痘病毒属Molluscum bodies软疣体

1. DrKnoll reckons this is because molluscs andarthropods are able to bufferthe chemistry of the internal fluids from whichthey create theirshells.
   努尔博士猜想这是因为软体动物类和节肢动物类生物能够减缓它们所造外壳内部流动的化学反应。