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1·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》

2·There was a blank look on his face.

他脸上没有表情。

3·I tried to explain, but he gave me a blank look.

我试图解释，但他却茫然地看着我。

4·I tried to explain, but he just gave me a blank look.

我试图解释，但他却茫然地看着我。

5·We tried to explain again, but he just gave us a blank look.

我们还要再作解释，但是他只是毫无表情地看了我一眼。

6·I tried to tell her the truth, but she just gave me a blank look.

我想告诉她事实真相，但她只是莫名其妙地看看我。

7·Then he saw his dad, and the blank look in his eyes gave the answer.

随后，亨利看见了父亲，父亲眼中茫然的眼神说明了一切。

8·The unsmiling waiter gave me a blank look, so I strode off inside to search for it myself.

不苟言笑的侍者茫然地看了我一眼。

9·Faced with my blank look of incomprehension, the taxi driver took a deep breath and tried again.

看着我不理解的表情，出租车司机深呼吸，又试了一次。

10·He had the square shoulders of a soldier, but his eyes lacked the blank look of the ordinary soldier.

他有一个士兵所应有的阔肩膀，但是他的眼神中却没有一个普通士兵所常有的那种茫然若失的表情。