used to introduce or append an expression, drawing attention to its status as a saying or as not part of one's normal language
俗話說,常言道
I am, as the saying goes, burnt out.我,正像俗話說的,已筋疲力盡了。
I am, as the saying goes, burnt out.
我,正像俗話說的,已筋疲力盡了。