| 词组 | do double duty for something |
| 释义 | do double duty for something do (double) duty as/for (something) American & Australian to also have another purpose. They make an electronic identity card that will do duty for a credit card and pocket calculator. She's really the secretary but she does double duty as the receptionist during Katrina's lunch hour. |
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英语词组固定搭配大全包含18674条英汉双解词组，基本涵盖了全部常用英文词组、短语的翻译及用法，是英语学习的有利工具。