[jù shuō]
it is said; they say; allegedly
They say [It is said that] he's a miser.
据说他是一个小气鬼。
The traffic accident was allegedly due to negligence.
这次车祸据说是由于疏忽造成的。
This is allegedly the case.
据说情况如此。
It is said she is quite sure of success.
据说她很有成功的把握。