Companies have long kept a close eye on employees to maintain productivity and guard against theft.
一直以来，公司都时刻提防员工顺手牵羊，并监督他们保持工作效率。
The coastal guard kept a watchful eye on the black spot that had appeared out at sea.
海防战士警觉地注视着出现在海面上的黑点。
Contains Triple Health GuardThis formula provides your baby with the benefits of Triple Health Guard for growth, brain and eye development and immune system strength.
帮助您的宝宝健康发育成长，增强宝宝大脑和视力开发，同时为您的宝宝的免疫系统提供了强大的后盾。
The bank guard kept an eye on the parking lot while they were loading the armored truck with money.
在给装甲车上装钱时，银行的卫兵密切注视着停车场。
Under the plan, 120 federal police kept a 24-hour guard on a small commercial area close to the border. Checkpoints were positioned every 500m to inspect cars and keep an eye on racketeers.
这项计划调动了120位联邦警察对边境旁边的一小块商业区进行24小时全天候的守卫，每隔500米就有一个岗哨检查过往车辆并密切注意诈骗团伙。
Under the plan, 120 federal police kept a 24-hour guard on a small commercial area close to the border. Checkpoints were positioned every 500m to inspect cars and keep an eye on racketeers.
这项计划调动了120位联邦警察对边境旁边的一小块商业区进行24小时全天候的守卫，每隔500米就有一个岗哨检查过往车辆并密切注意诈骗团伙。
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