A torrent of words; speaking fluently and at great length.

他讲起故事来口若悬河，非常动人。

noun · An embanked river whose riverbed is higher than the surrounding floodplain.

由于泥沙淤积，黄河下游形成了著名的悬河。

noun · A waterfall or cataract (literary usage).

远远望去，那道瀑布宛如悬河倾泻而下。