Security guards make regular patrols at night.

夜间保安人员定时巡逻。

《牛津词典》

It has left many Maasai destitute, with young men now converging in the towns to hustle tanzanite, a semiprecious local stone, or to seek poor-paying jobs as night guards.

留下了很多马赛赤贫者，年轻男子现在集聚在城镇里卖，一种次珍贵的当地石头，或者寻找低收入的工作比如夜班警卫。

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Surrendering proved tricky as the guards he had been supposed to kill were slow to raise the alert and he was questioned only after sleeping outside the camp for a night.

投降被证明是明智的，因为他被要求去杀害的美国兵的警觉很迟钝。 他在营帐外睡了一个晚上后才被讯问。

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Security guards from the night staff and Boston police manned every door, allowing no one in without ID.

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Bieber visited the house "together with his friends and guards" Friday night, according to the site's official Facebook page.

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On Monday night security guards in the office phoned me and said the shop windows had been put through.

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