They need to be alert and undistracted.

他们必须得集中精力，不能分神。

Give yourself three full hours undistracted.

给自己三个完整的小时，不要分心。

I want you to take the full test start to finish undistracted.

我希望你参加完整的考试，尾都心无旁骛。

One group was left undistracted while the other had to engage in a conversation using a speakerphone.

一组不受干扰，另一组则不得不使用免提电话进行对话。

I bounded indignantly in my seat, but the examining magistrate was continuing his questions, undistracted by side issues.

我气愤地在座位上蹦蹦跳跳，但预审法官仍在继续他的问题，没有被其他问题分心。

(Cheers) I mean, where else do you witness this: (Cheers) this many humans, connected, focused, undistracted and unfragmented?

（干杯）我的意思是，你还能在哪里看这一点：（干杯）这么多人，相互联系，专注，不分心，不分散？

Barack, who's always been good at compartmentalizing, managed to be admirably present and undistracted when he was with us.

貝拉克一向善于划分，当他和我们在一起时，他成功地令人钦佩地在场并且没有分心。