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| 单词 | derrick |
| 释义 | der·rick (dĕrĭk)n. 1. A machine for hoisting and moving heavy objects, consisting of a movable boom equipped with cables and pulleys and connected to the base of an upright stationary beam. 2. A tall framework over a drilled hole, especially an oil well, used to support boring equipment or hoist and lower lengths of pipe. [Obsolete derick, hangman, gallows, after Derick, 16th-century English hangman.] |
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