亚历山大?格雷厄姆?贝尔——电话
（美）凯瑟琳2018-09-05 09:416,101
发明者的故事
Bell and His Legacy
It is such a common occurrence that no one ever wonders from whence it came。 But the telephone has a fascinating story behind i
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淡定的人生不寂寞：英汉对照
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