A spy, saboteur, or the like, who remains inactive for a long period before engaging in spying or sabotage or otherwise acting to achieve his ends; l…
| 单词 | θ86315 |
| 释义 | the world > action or operation > inaction > [noun] > fact of remaining inactive > one who, especially a spy (1) sleeper1955 A spy, saboteur, or the like, who remains inactive for a long period before engaging in spying or sabotage or otherwise acting to achieve his ends; l… |
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