However, although they look dangerous because of their wide mouths and sharp teeth, all but two or three kinds are harmless to humans.

尽管它们有宽大的嘴巴和锋利的牙齿，看上去很危险，然而除了两三种外，其余的对人类并没有危险。

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However, when your staff begins to complain that they’re overworked, you have received a dangerous signal that they are burning out and may look elsewhere when the market improves.

但是，当你的员工开始抱怨工作太累时，你就接到了一个危险的信号，他们已经对工作失去了兴趣，很可能会在市场看好时另谋高就。

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When threatened, chimpanzees-- their hair stands up on end and that makes them look bigger to fool others to thinking they're more dangerous than they are.

当黑猩猩受到威胁-,它们的毛发会竖起来,使得他们看上去更加强壮,从而使其他黑猩猩误以为它们,比原先想象中更加危险。

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The goal sparked fresh life into Daggers, and they began to look dangerous going forward.

BBC: Yeovil 2-2 Dag & Red

Unsurprisingly, Boro then looked to sit back on their advantage and though Liverpool had more space in which to come forward, they did not look dangerous.

BBC: Liverpool 2-1 Middlesbrough

Down did look dangerous when they managed to break into the Tyrone half with the Red Hand half-backs' eagerness to get forward, leaving gaps for the Mournemen to exploit.

BBC: Clones thriller ends in draw