At last, the recent development of ultrasonic backscatter imaging is reviewed.最后, 简要介绍了超声背向散射成像的新进展.Officials at the Transportation Administration say they have already tried out a handful of backscatter scanners.运输安全局的官...
那座城市的街道肮脏不堪，弥漫着令人窒息的废气。The city's streets are filthy and choked with exhaust fumes.他们冲下楼梯，来到狭窄、肮脏的街上。They chased down the stairs into the narrow, dirty street.他发现自己的哥哥住在一套破旧肮脏、蟑螂肆虐的公寓里。He found his brother in a seed...
他们正在挖蚯蚓作鱼饵.They were digging up worms to use for bait.一条鱼在轻轻地啃鱼饵.A fish nibbles at the bait.河里的鱼很多, 我钓线上的鱼饵也蛮好, 可这些鱼越来越狡猾,今天就是不上钩.There are plenty of fish in the river, and good baits on my line, but the fish are getting...