cow knows not what her tail is worth till she has lost it
cow {not} [know] the (worth|value) of (its|her) tail (till|until) it is cut offcow {not} [know] what her tail is worth (till|until) she has lost itcow {not} [know] what its tail is worth (till|until) it has lost itcow knows not what its tail is worth (till|untill) it has lost itcow knows not what her tail is worth till she has lost it
01
used to imply that people often do not recognize the true worth of something or someone until it is lost or no longer available
Proverb
例子
Susan failed to appreciate her parents' support until she moved out on her own. Only then did she realize that a cow knows not what her tail is worth till she has lost it.
