| 单词 | sentry |
| 释义 | sentry n soldier posted outside a building, etc in order to watch or guard it 岗哨; 哨兵 People approaching the gate were challenged by the sentry. 向大门走去的人受到了哨兵的查问. [attrib 作定语] sentry duty 哨兵的值勤. |
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