| 单词 | runofbook |
| 释义 | run of book noun [uncountable] (abbreviation rob) (marketing 营销) when an advertisement is placed anywhere in a newspaper, magazine, etc. and the advertiser has not paid for a particular place （报章、杂志等中）不指定版位的广告◆run-of-book ads 任选位置的广告 |
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