Ron was staring at it, looking slightly wary.

罗恩盯着它，心存戒。

Does he always guard the premises in this way? asked Holmes.

他平日就这样地戒？

Cornell eating behavior expert Brian Wansink enlisted 60 unsuspecting adults to find out.

为了找到答案，康奈尔大学的饮食行为专家布莱恩·文辛克招募了60名毫无戒心的成人。

Post sentries at all the outlying villages. Put the lookouts on full alert.

在偏远山村布岗放哨。城门全面戒。

Their camouflage makes them incredibly effective at ambushing unsuspecting prey.

它们的伪装使它们在伏击毫无戒的猎物时非常有效。

Our ground-based air defense weapons systems have been put on high alert.

们的陆基防空武器系统已经处于高度戒状态。

It is so guarded that there are no media tours allowed of factories.

这里戒森严，不允许媒体参观。

Her body language is very defensive whereas it used to be welcoming.

她的身体语言充满了戒心，不像过去那样友好。

There was also heavy security around government buildings.

政府大楼周围也戒森严。

So, as for the United Nations, it's on high, high alert actually.

所以，联际上处于高度戒状态。

Security in the capital city, Colombo, increased Tuesday for a national day of mourning.

斯里兰卡首都科伦坡周二加强了戒，为全哀悼日做准。

Needless to say, it is heavily guarded.

不用说，那里戒森严。

They enter social situations expecting to be disliked, often feeling vulnerable and defensive.

在进入社交场时，他们期待被讨厌，常常感到容易受伤表现戒。

But for everyone else, shark bait describes someone who is unsuspecting and easy to trick.

但是对于其他人来说，" shark bait" 形容毫无戒心，容易上当受骗的人。

They distrusted all strangers, including the regular pedlars who sold fabric out of their vans.

他们对所有的陌生人都心怀戒，包括那些经常开货车卖布料的小贩。

So German police also went on high alert and tightened border controls.

因此德警方也处于高度戒状态，同时加强了边界控制。

And it was a large field inside a police training compound, heavily guarded.

该地是警察训练场所内的一个大型场地，戒相当森严。

These men are always on their guard.

这些人随时戒着。

But the country is now again on alert.

但是这个家现在再次处于戒状态。

Some dared to get out of their cars, still wary of flying debris.

有些人还敢下车观看，但他们仍对飞溅的碎片心存戒。