同学你好，该知识点来自沪江网校《新概念英语1、2册连读【随到随学班】》的课程，想要更系统的学习，欢迎进入课程学习。不仅可以和更多的同学一起学习，而且还有老师、助教随时的学习指导和知识点解答哦。

同学你好
check out 意思是
1. 结账退房;结账离开(诊所);给…办理结账手续
They packed and checked out of the hotel.
他们收拾好东西，办理了退房手续。

2.了解清楚;核实;查实
If you check out something or someone, you find out information about them to make sure that everything is correct or satisfactory.
Maybe we ought to go down to the library and check it out...
或许我们应该去趟图书馆，查个明白。

check on 查对，核实，检查
例子
We'd better check on the match in the local paper   我们最好在本地报纸上查一下这场比赛。

祝学习愉快哦