"IwishthatinoneinstantIcouldtellyouofmysafearrival,...
问题详情: "IwishthatinoneinstantIcouldtellyouofmysafearrival,butweare3,000milesapartandmustwaitfourlongweekstohearfromeachother."SamuelMorsewas20whenhewrotethissentenceinalettertohismotherin18...