Staff are often discourteous and sometimes downright rude.职员常常态度很不礼貌，有时候极其蛮横。I was offended by his discourteous reply.他无礼的回答使我很生气.It was discourteous of you to arrive late.你迟到了,真没礼貌....
I was offended by his discourteous reply.他无礼的回答使我很生气.Staff are often discourteous and sometimes downright rude.职员常常态度很不礼貌，有时候极其蛮横。Mr Kingman's performance was described by committee members as " dozy " and " discour...
他在用铁锤把那块岩石一小块一小块地敲下来.He was chipping away at the rock with a hammer.工人把铁锤平了.The worker hammered the iron flat.铁锤可以是致命的武器.A hammer can be a lethal weapon....
A frequency of one million megahertz, 10000? 200 Hz.一百万兆赫(兹)频率, 即10000? 200赫(兹)....UHF frequencies of around 900 megahertz.大约900兆赫的超高频率The bandwidth ( megahertz ) and spectrum position of the signal arising from televisi...