To keep your eyes peeled 保持高度警觉
A modern jack-o'-lantern is typically a carved pumpkin. It is associated chiefly with Halloween. The top is cut off, and the inside flesh then scooped out. An image, usually a monstrous face, is carved out, and the lid replaced. The name is associated with Irish folklore about 'Stingy Jack' who played tricks on the Devil.
如果有人提醒你说 ‘to keep your eyes peeled’ 意思就是要你保持高度警觉，注意观察周围的一切。
John told me he'd meet us in the mall, so keep your eyes peeled.
We need to follow signs for the motorway, so keep your eyes peeled.
Mum will be home any minute. Keep your eyes peeled whilst I tidy up!
另一个短语 keep your nose out 的意思是不要多管闲事。
This has got nothing to do with you. Keep your nose out!