In Chinese, there are two kinds of comma. The normal comma expresses a rather long pause in a sentence while the semi-comma stands between to words or groups of words.
Normal Comma as Rather Long Pause
|I, me, my||think, would like to, think of sb, want, miss, future: will||read a book||，||he, him, other||think, would like to, think of sb, want, miss, future: will||look, read||report||。|
|I want to read a book while he wants to read a newspaper.|
Semi-Comma as Rather Short Pause
|I, me, my||think, would like to, think of sb, want, miss, future: will||go to, pass away, remove||China||、||Germany||。|
|I want to go to China (and) Germany.|