telegraph灰色版,telegraph灰色版安装包获取解释词语落实释义
1、atthattimeheresidedinSalem，MassachusettsAlexanderGrahamBellinventedhistelephoneasar
1、at that time he resided in Salem， MassachusettsAlexander Graham Bell invented his telephone as a result of his research into improving the telegraph system He was experimenting into improving the system so mu。
