At 8:15 a. M. On August 6, 1945, an atomic bomb was dropped on a city for the first time in history.是什么意思_At 8:15 a. M. On August 6, 1945, an atomic bomb was dropped on a city for the first time in history.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句