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- Shell viruses wrap themselves around a host program and don't modify the original program. 外壳型病毒将它们自己包裹在主程序的四周，对源程序不作修改。
- Shell viruses wrap themselves around a host program and don't modify the original program. Shell programs are easy to write,which is why about half of viruses are of this type. 外壳型病毒将它们自己包裹在主程序的四周，对源程序不作修改。外壳型病毒容易编写，这也正是约有一半病毒程序是这种类型的原因。
- Some viruses incubate very rapidly. 有些病毒繁殖得很迅速。
- We should be watchful of computer viruses. 我们应该警惕计算机病毒。
- Keep down of you'll be hit by shell fragments. 别起来，否则你会被弹片击中的。
- The snail retreated into its shell. 蜗牛缩进壳里去了。
- The study of viruses and viral diseases. 病毒学一种病毒和病毒性疾病的研究
- A shell splinter embedded itself in the wall above his head. 在他头上方的墙壁上嵌有一块小小的贝壳片。
- The building was burned to a shell. 大楼被烧得只剩下空骨架。
- New strains of viruses appear periodically. 新菌系的细菌周期性地产生。
- The despair left him a mere shell of a man. 他陷入绝望，形同躯壳。
- The presence of viruses in the bloodstream. 病毒血症血液中出现病毒的症状
- She crumbled an empty snail shell in her fingers. 她用手指捏碎了一个空蜗牛壳。
- The action of cleaning computer viruses. 清除计算机病毒的动作［过程］。
- A snail's shell is spiral in form. 蜗牛壳是螺旋形的。
- Keep down or you'll be hit by shell fragments. 别起来，否则你会被弹片击中的。
- The building was destroyed by an artillery shell. 这座建筑物被炮弹炸毁了。
- Having a shell consisting of two hinged valves. 双瓣壳的有由两个开合的瓣组成贝壳的
- I shall be expected to shell out (the money) for the party. 这次聚会可能要让我花钱。
- A clear plastic bubble or shell covering part of an aircraft. 镶有玻璃的座舱飞机上由透明的玻璃构成的透明圆罩或壳状物
