单词under-one-s-nose
When sneaking around in places one is not supposed to be, one should tie a handkerchief around one"s head and under one"s nose.
当在一个不允许进入的地方鬼祟行动时，应该要用围巾绕过鼻子下来包里著头。
It"s hard to perceive the shadow behind sweet gifts; the easy profit under one"s nose prevents the eyes from seeing other things.
甜美礼物背后的阴影往往不易察觉，因为眼前不劳而获的利益阻挡了眼睛看见其他东西的可能性。
something is right under one"s nose.
就是用来表示事物就在眼前。