张小狗带你环球旅行圣诞节过得怎么样啊，小婊贝们。过完了圣诞节，小狗老师化身成职业人贩，哦不，职业导游，带你们领略世界上的壮丽景色。
环球旅行第一站：
Yellowstone National Park
The establishment of YellowstoneNational Park by act of Congress on March 1
，
1872
，
for the first time signified that public lands were to be set asideand administered by the federal government
“
for thebenefit and enjoyment of the people.
”
In 1891
，
President Harrison established Yellowstone Timberland Reserve asthe nation's first forest reserve
，
and in 1903President Roosevelt established Pelican Island