They were asked, online, to memorize and identify unfamiliar faces.

他们被要求在记住和辨认不熟悉的面孔。

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But to the school, in the face of unfamiliar faces unfamiliar environment, I want to cry well.

可是来了学校，面对陌生的环境陌生的面孔，我好想哭。

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The police patrol around the clock, and security guards stop unfamiliar faces to check identification papers.

警察全天候都会在此巡逻，遇到陌生的面孔就会检查他们的证件。

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Before England ish soccer introduced the January transfer window, which restricts roster moves to a 31-day period in the middle of the season, a gallery of unfamiliar faces had a profound impact in the final stretch.

WSJ: Premier League Cavalry

The Dutch and French, like the Germans, have sent fresh faces to the commission, though not people unfamiliar with its workings.

ECONOMIST: The European Commission: New broom sweeps half-clean | The