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...
The tea was sweetened with a hoarded tin of condensed milk.用贮藏的一罐炼乳为茶添加了甜味。The substance of their talk is condensed into a paragraph.他们谈话的要旨被压缩成一段话.Moisture in the atmosphere condensed into dew during the night.大气中的水汽在夜间...