Canadasharesthelongestinternationalborder(邊界)intheworld...
問題詳情：Canadasharesthelongestinternationalborder(邊界)intheworldwiththeUSA,whichis8,891kmlong.ThelongestpartoftheborderissharedwiththeUSstate,Alaska,anditisabout2,475kmlong.Hereismoreinformationabout...