N-COUNT A sentry is a soldier who guards a camp or a building. 哨兵; 警卫
The sentry would not let her enter.
警卫不会让她进来。
There were the churches—Baptist, Methodist, and Presbyterian—facing each other at the intersection of Second and Elm like wary sentries, their steeples competing for height.
浸礼会教堂、卫理公会教堂和长老会教堂，在第二大道和榆树大道的交叉口，它们像机警的哨兵一样面对面地矗立着，教堂的尖塔争相往高处伸。
They've got sentries posted, and they are all armed.
他们布置了岗哨，而且都全副武装。
The sentries were on the look-out, of course, with their guns and their "Who comes there?"
当然，哨兵们带着他们的枪站在瞭望台上，问“来的是谁？”
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