在许多应用场合,波动的直流电是讨厌的.In many applications a fluctuating DC current is undesirable.他是个情绪波动的演员(演得好坏由心情而定).He's avery temperamental player, ie plays well or badly accordingto his mood.他们波动的回声中带有一种难言的悲哀.In their echoes, t...
Policemen, bankers and butchers are all lumped together in the service sector.警察、银行家和卖肉的全被一股脑儿地并在了服务行业里。These two questions should not be lumped together.这是两个问题,不能往一块儿扯.Because she was lumped together with alcoholics and...