sentinel

/ˈsɛntɪnəl/

noun

A sentry, watch, or guard. / (obsolete) A private soldier. / (computer science) A unique string of characters recognised by a computer program for processing in a special way; a keyword.

The sentinel stood guard at the entrance of the castle.

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詳細

意味（1）

A sentry, watch, or guard.

They promised faithfully to bear their confinement with patience, and were very thankful that they had such good usage as to have provisions and light left them; for Friday gave them candles (such as we made ourselves) for their comfort; and they did not know but that he stood sentinel over them at the entrance.

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