alexandergraham,

p>亚历山大·格拉汉姆·贝尔(alexander graham bell,1847年3月3日

alexandergrahambelltheinventoroftheelectricspeakingtelephone短评
![alexandergraham, 预订 alexander graham bell: the spirit of. [9781459505261]]()
预订 alexander graham bell: the spirit of. [9781459505261]

【预订】alexander graham bell

【预订】alexander graham bell: destinado para inventar =