1. Couch surfers tend to see themselves as part of a tribe; unlike two people hooking up at a bar, they meet under an altruistic premise. 沙发冲浪者视自己为一个部落的成员；不像在酒吧里面邂逅的两个人，他们是在利他主义的前提下相遇。
2. American people emphasize efficiency,competition and originality while Chinese people give priority to careful planning and encourage close cooperation and altruistic dedication among team members. 美国人强调效率、竞争和独创性，而中国人则将严谨规划放在首位，鼓励团队成员之间的密切合作和无私奉献。
3. American people emphasize efficiency, competition and originality while Chinese people give priority to careful planning and encourage close cooperation and altruistic dedication among team members. 美国人强调效率、竞争和独创性，而中国人则把周密计划放在首位，鼓励团队成员之间的密切合作和无私奉献。
