识英文 知时事：see, spot, smell, etc. something a mile off 早看出?

据 CNN报道，普金下令俄军进入乌克兰（Russian President Vladimir Putin orders Russian troops to enter two separatist-held regions in Ukraine）。普金之所以会动手是因为摸到了西方的底牌，媒体称Putin smells Biden' weakness a mile away 。see, spot, smell, etc. something a mile off指早知道，例如：

To see or predict something well in advance of it actually arriving or happening. I can see where this conversation is heading a mile off.The car is so obnoxiously large that you can see it a mile off.