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...
Zoologist Eugene Morton has propounded a general theory of the vocal sounds that animals make.动物学家尤金·莫顿提出了一个有关动物发声的概括性理论。Mr Morton is undoubtedly cleverer than Mr Kirkby, but he will be hard put to match his popularity.莫...
They ought to win with players of such high caliber.他们选手的能力这样高,应该获胜.There is no other player even remotely approaching her caliber.就才干而言,其他选手远远赶不上她.We are always trying to improve the caliber of our schools.我们一直在想方设法提高我们...
Tweed ordered a carafe of the house wine.特威德点了一瓶佐餐葡萄酒。She lifted the stopper from the carafe.她拔出玻璃酒瓶上的瓶塞.At dinner, share a half carafe of agreeable wine with an agreeable companion.晚饭时，和知己分享半壶美酒。...