It is not surprising that modern children tend to look blank and dispirited when informed that they will someday have to "go to work and make a living".

当如今的小孩被告知他们将有一天不得不去“工作与谋生”时，他们可能面露茫然与沮丧，这不足为奇。

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It is not surprising that modern children lend to look blank and dispirited when informed that they will someday have to "go to work and make a living".

当如今的小孩被告知他们将来有一天不得不去“工作与谋生”时他们可能面露茫然与沮丧，这不足为奇。

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He gave her a blank look, as if he had no idea who she was.

他茫然地看了看她，好像不认识她似的。

《柯林斯英汉双解大词典》

However, on television, a blank or flat expression does not look blank.

FORBES: Smile For The Camera -Media Training

It takes a blank look and actually makes it look like a frown, and it takes a smile and makes it appear neutral.

FORBES: Smile For The Camera -Media Training

His wife, Zoe, then told the inquest she saw Bird carrying the rifle with a "blank look" on his face and was "unnerved".

BBC: Derrick Bird asked 'nice day?' before shooting tourist