Machine translation makes some parents raise doubts about the necessity for their children to learn foreign languages.

机器翻译使一些父母怀疑是否有必要让他们的孩子学习外语。

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But the answers of villagers raise doubts about who is here.

但是，村民的答案引发了人们的怀疑。

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The mistakes we make in telling time also raise doubts about the clock models.

人类在报时上所犯的错误同样也使我们对大脑的计时模式提出了质疑。

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But no politician or bureaucrat seems prepared to raise doubts, if, indeed, any are harbored.

FORBES: Connect

Rankings based on anonymous online votes, such as those on TripAdvisor, also raise doubts.

WSJ: Restaurant Rankings May Give You Little to Chew On

Such largesse sounds wonderful, but a dramatic cancellation of loans could raise doubts about the rural-credit culture.

ECONOMIST: A generous budget, but not a prudent one