眼皮底下[yǎn pí dǐ xia]
under one's eyes; under the nose of someone:
例：侦察兵就在敌人眼皮底下活动。
The scouts are active under the enemy's very noses.
1. 眼皮底下是什么意思
1. Under Your Nose：16. Laugh a Little 笑面人生 | 17. Under Your Nose 眼皮底下 | 18. Get Up on the Right Side 端正态度