hide 是隐藏，隐藏着脸不敢去面对，所以hide one's face的意思就是“捂着脸或低下头，恨不得找个地缝钻进去。”

【例句】
He himself cannot get the understanding of common people, hide in oneself world, easily hide one's face in public.
他自己得不到世人的了解，便躲在自己的世界中，轻易不抛头露面。

Michael showed me exactly who had broken my vase when he hid his face in response to my question.
迈克尔在回答我的问题时恨不得找个地缝钻进去向我展示了谁打碎了我的花瓶。