Mary faltered, beginning to feel frightened.

玛丽犹豫了一下，开始感到害怕。

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Being different from the art museum visitors, design museum visitors seldom feel frightened or puzzled.

与美术馆参观者不同的是，设计博物馆的参观者很少感到害怕或困惑。

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When they feel frightened, they roll up into a ball to protect themselves.

当它们感到害怕时，它们会蜷缩成一团来保护自己。

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Some night shift workers, who have to walk to and from work in the dark, say they feel frightened.

BBC: Dorset midnight street light switch-off to continue

They couldn't feel frightened of America after that.

BBC: Magazine

Women say they feel under siege and are so frightened they have structured their entire lives to protect themselves from harassment and attack.

NPR: Indian Panel Pushes New Laws After Fatal Gang Rape