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...
I never did a stroke of work at college.我在上大学时懒得要命。I started work at dawn and returned only at nightfall.我披星戴月地工作。If it's all the same to you, I'd rather work at home.如果对你来说没什么差别,我宁愿在家中工作。...