数字音频广播是21世纪的无线电广播系统。DAB is the radio system of the 21st Century.它的频率响应在整个音频范围内有所下降.Its frequency response has to be flat over the whole audio range.他们欢呼在音频方面所取得的进步.They hailed the advances audio has made....
Beckham wore a fetching outfit in purple and green.贝克汉姆穿了一件抢眼的紫绿两色套装。Sue was sitting up in bed, looking very fetching in a flowered bedjacket.休坐在床上，穿着印花宽松短睡衣，显得非常迷人。I helped out in the tents fetching and carrying.我在帐篷里帮忙...
The components of a suspension bridge are: flexible cables, towers, anchorages, suspenders, deck and stiffening trusses.悬索桥有下列构件: 柔性索缆 、 索塔 、 锚固件 、 吊杆 、 桥面、加劲桁架.Gone are the support suspenders and gaudy steel rings that ...