Morning Special_0722

* blow hot and cold (v): to be changeable or uncertain (about sth)
ex> She has been blowing hot and old on where to go for our honeymoon.

* one-of-a-kind: 특별한, 독특한
ex> a small one-of-a-kind publishing house

* fly in the ointment: a drawback or detrimental factor; 옥의 티, 헛점
ex>  It sounds like a good idea, but there must be a fly in the ointment somewhere.