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孙子：“爷爷知道的事总是比孙子要多，这是真的吗”爷爷：“是真的”“那么电是谁发明的”“富兰克林。”“为什么他的爷爷没有发明呢”谁知道得多@袁根新
Grandchildren: “Grandpa always knows more than grandchildren. Is this true?” Grandpa: “It’s true.” “Who invented electricity?” “Franklin.” “Why did not his grandpa invent it? ” who knows much @ Yuangen new