Fat is an excellent insulator against the cold.脂肪是极好的抵御寒冷的绝热体。Any two conductors separated by an insulator are said to form a capacitor.由绝缘体隔开任何两个导体就组成电容器.The FRP is an insulator to electricity, so it is good in safety.因...
Fat is an excellent insulator against the cold.脂肪是极好的抵御寒冷的绝热体。Dry air is a good insulator, but sea water is not.干燥空气是一种好绝缘物, 海水则不是.The atoms of an insulator hold their electrons very tight.绝缘体的原子把电子抓得很牢....
战俘杀死卫兵后, 很快把他拖进矮树丛中.When he had killed the guard, the prisoner of war quickly dragged him into the bushes.那人一直藏在你门外的矮树丛中,你应该把这情况告诉警察.You ought to inform the police about that man who's been hiding in the bushes outs...
If physical diseases are awesome, then mental melees makes one despondent like a zombie.要是说身体的疾病令人畏惧, 那么心理的骚乱则让人失魂落魄,仿佛行尸走肉.Patients often feel despondent.病人经常会感到沮丧.He was up for a time and then, without warning, despond...