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....
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...
People don'tlike to ask questions for fear of appearing ignorant.人们不喜欢问问题，害怕自己会显得很无知。They did not want to give evidence for fear of reprisals.他们因为害怕报复而不想作证。For fear of disturbing others she spoke with bated breath.因...
All too often it is only the negative images of Ireland that are portrayed, colouring opinions and hiding the true nature of the country...媒体往往描绘的只是爱尔兰的负面形象，影响了大家的看法，掩盖了这个国家的真实面貌。It is hard work and not a glamorous job a...
The economy isn't bounding back as fast as people expected.经济并未像人们期望的那样迅速复苏。Leaving aside the tiny minority who are clinically depressed, most people who have bad moods also have very good moods...撇开极少数临床抑郁症患者不谈，大多数...