The U. S. welcomes travelers from all over the world who come to the U. S. for business, tourism, study, and other purposes of visitation.
美国欢迎来自世界各地的来访者赴美商务，旅游，学习或者是其他的来访目的。
Tourism is a kind of activity that people travel for leisure, commerce or other purposes and leave the confirmed circumstance for some other places and stay there, but less than one year.
旅游是人们为了休闲、商务或其它目的，离开惯常的环境，到某些地方去以及在某些地方停留，但连续停留时间不超过一年的活动。
应用推荐