waste breath
... 白说 waste breath 北京话 Beijing dialect 不算话 not keep to one's word ...
waste one's breath
... wash one's hands of 洗手不干 waste one's breath 白说,白费力气 wear off 慢慢地消失掉,褪掉 ...
The Easy Way
Keep it real ; to be frank
Bleaching Instructions
"白说"是个多义词,它可以指白说(词语),白说(白岩松著长篇自传集)。