铜是热和电的良导体.Copper is a good medium for the conduction of heat and electricity.木头是热和电的不良导体.Wood is a poor conductor of heat and electricity.铜是电的良导体.Copper conducts electricity well....
Princess Margaret toned with her in a turquoise print dress.玛格丽特公主那条青绿色的印花裙子与她很相配。Although it's not strenuous exercise, you feel toned-up, supple and relaxed.虽然这不是剧烈运动，但会让人感到强健、柔韧与放松。The forecasts have since had to ...
She was dancing while someone substituted at the piano.她在跳舞,别人代她弹钢琴.The synthesis methods of melatonin, related tryptaminetryptamine derivatives and substituted indoles are discussed.从人工合成的角度综述了美乐托宁及有关化合物色胺、色胺衍生物及吲哚衍生物的制...
He cheated death when he was rescued from the roof of his blazing cottage.他被人从他那熊熊燃烧的棚屋顶上救了下来，捡了条命。My sister still claims she cheated on us at cards, but I know better.我妹妹仍然说她和我们玩牌的时候捣了鬼，其实我心知肚明。The farmer felt the cow, ...