参考译文:月球的轨道大约是地球静止轨道的9倍。(在SVG文件中,将鼠标悬停在轨道或其标签上以突出显示它;点击此处下载文章。) Following the United States' deployment of GPS, other countries have also developed their own satellite navigation systems. These systems include: 参考译文:继美国部署GPS之后,其他国家...
Army that same year, but when the country entered World War II, he was excluded from active duty overseas because of poor eyesight and spent the war in the army’s First Motion Picture Unit. After the war, he resumed his film career; rose to leadership in the Screen Actors Guild, a ...