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...
1981年，新型的日产汽车平均每升汽油能跑13千米。New Japanese cars averaged 13 km to the litre in 1981.那里的通勤一族平均上下班要花5个小时。The average commuter journey there is five hours long.1970年，法国农场的平均规模为19公顷。In 1970 the average size of a French farm was ...
The town council passed a law forbidding the distribution of handbills.市议会通过法律,禁止散发传单.They passed a law forbidding the distribution of handbills.他们通过一条法令禁止散发传单.She produced from her pocket a bundle of handbills.她从口袋里掏出一束...