人体的免疫系统是抵御疾病的主要屏障。The immune system is our main defence against disease.这些人造屏障将会确保提供高度的保护。These man-made barriers will ensure a very high degree of protection.燕山是北京的天然屏障.The Yanshan Hills provide a natural defence for Be...
人们成组地生活在由隧道连接的建筑里.The men lived in a group of buildings joined together by tunnels.如图 19-5 所示,单击和拖动操作也是成组选择的基础.The click - and - drag operation is also the basis for group selection.配置索引管理和作业服务器 ( 如果已成组部署 )Configure inde...
"Prices are down 40 per cent since Christmas," he lamented.“圣诞节以来物价降了4成，”他悲叹道。The bank yesterday revealed a 30 per cent nosedive in profits.该银行昨天透露其利润骤降30％。Costs have been cut by 30 to 50 per cent.成本降低了30%到50%。...