At dusk we pitched camp in the middle of nowhere.黄昏时，我们在茫茫荒野中扎营。At dusk more fish come into the shallows.黄昏时分，更多的鱼游到了浅水区。The street lights go on at dusk .街灯在黄昏时分亮起来。...
石棉能用来使烹调用的炉灶绝热.Asbestos can be used to insulate a cooking stove.脂肪是极好的抵御寒冷的绝热体。Fat is an excellent insulator against the cold.从物理学上讲,两种介质之间不可能有完全的绝热.Physically it is impossible to have complete thermal insulation between...