On April 17, Ford dealerships everywhere were mobbed with customers.四月十七日, 全国各地的福特承销店都挤满了顾客.Ford dealerships operated as independent franchises.福特汽车公司的代销商都是独立的联营商.It discontinued some vehicles and closed dealerships and ...
月球的引力the gravitational pull of the moon卫星被射入环绕月球的轨道.The satellite was launched into orbit around the moon.月球的石头和地球的不同.The lunar stone is different from earth's....
欧洲的交流电输出频率通常为50赫兹。In Europe, AC is usually generated at 50 Hz.你可在短波37.5赫兹上收到我们的节目.You can receive our program at short wave 37.5 MH.频率用赫兹即每秒钟的周数来计算.Frequency is measured in hertz, or cycles per second....