It was amniotes that evolved the eggshell, a development which let them sever all connection with the water by laying their eggs on land.
正是羊膜动物进化出了蛋壳，这一进化使其可以在陆地上产卵，由此彻底切断与水的所有联系。
Finding the causes of the breakdown of pipeline of the water supply companies is the key to sever the customer.
找出引起供水公司管网故障的原因是供水公司进行客户服务的关键。
The results shows the indirect under water explosive make sever influence to the pedestal it can never be neglected during the process of design.
计算结果表明，水下非接触爆炸造成的冲击载荷对舰船基座应力、变形产生重大影响，在基座设计中不容忽视。
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