就他们的立场而言，他们为未来开了一些非常令人担忧的先例。

As they stand, they set some very worrying precedents for the future.

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他们对她的安全感到非常担忧。

They felt strong anxiety for her safety.

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那对父母为他们出走的孩子非常担忧。

The parents were worried about their runaway child.

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那对父母为他们出走的孩子非常担忧。

The parents were worried about their runaway child.

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