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Police were periodically patrolling the area.是什么意思？

Police were periodically patrolling the area.

警察定时在这一地区巡逻。

相关词汇
police were periodically patrolling the area

police

n. 警察部门，警方，警察，治安；vt. （警察、军队等）巡查，维护治安，（委员会等）监督，管制；adj. 警察的，有关警察的；

were

be的过去时复数和第二人称单数形式，有时代替 was,用于条件从句、动词 wish 之后等；

periodically

adv. 周期性地，定期地，偶尔；

patrolling

vt.& vi. 巡逻，巡查（patrol的现在分词形式）；

the

art. 指已提到的人（物），指说话人与听者已知的人（物），用于独一无二的事物前，与形容词最高级和序数词连用；

area

n. 地区，区域，范围，面积，平地，领域；
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