I prayed that nobody would notice my mistake.

我但愿没人注意到我的错误。

《牛津词典》

But Pan did not care about it as he knew nobody would notice him even if he was in the masses. He preferred to play the flute and hoped fairy would hear him.

但是潘恩无所顾及，他知道即使自己在最热闹的地方也不会有人注意，还不如就在这湖泊边上吹箫，或许仙子可以听见呢！

youdao

She said later in an interview that if she quit by politely giving two weeks' notice, nobody would know about the issue she really CARES about.

她随后在接受采访时表示，如果她提前两周通知从而礼貌地辞职，没人会知道她真正在乎的问题。

youdao

Somebody, perhaps emboldened by the success of the slogan "No Pain, No Gain, " simply made it up, thinking that nobody would notice.

WSJ: Joe Queenan Asks: Has That T-Shirt Been Fact-Checked? | Moving Targets

On a good day the river would be tinged scarlet as far north as Rush Street, and nobody paid much notice.

FORBES: A most unromantic river