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1·Her voice was flat and expressionless.

她的声音平淡而呆板。《牛津词典》

2·His face was expressionless, but Alex felt the unspoken criticism.

他面无表情，但亚历克斯感觉到了他无言的批评。《柯林斯英汉双解大词典》

3·His face had become peculiarly expressionless.

他的脸变得异乎寻常地毫无表情。《柯林斯英汉双解大词典》

4·She sat expressionless, carefully taking notes.

她面无表情地坐着，仔细地记着笔记。《柯林斯英汉双解大词典》

5·His face remained expressionless.

他的脸上仍然毫无表情。

6·So, look at each other expressionless.

请面无表情地互相看。

7·It was glassy, expressionless, immobile.

它是呆滞的，不动的，无表情的。

8·Again I was impassive and expressionless.

我还是面无表情、不露声色。

9·Are you not blinded by such expressionless sirens?

这些面无表情的水妖没有弄瞎你的双眼吗？

10·I looked back, my face impassive and expressionless.

我也看她，面无表情、不露声色。