There was a bored expression on her face.

她脸上有一种厌倦的表情。

《牛津词典》

They waited until the babies got bored and inverted their gaze from the face.

他们一直等到婴儿们都厌烦了，才把目光从婴儿的脸上移开。

youdao

Keep your hands Away from your face - Putting your hands on your face during a conversation tells the other person that you're either bored, negatively judging them, or trying to hide something.

不要用手碰脸——如果你在交谈时用手碰脸，别人就会认为你要么感到无聊，要么就是不同意他们，或者是想要掩饰什么。

youdao

"I have heard about it in the literature, " he says of the latest gadgets, with a bored expression on his face.

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