To adopt two approaches simultaneously; to do two things at the same time.
管指笔。原指手握双笔同时作画◇比喻做一件事两个方面同时进行或两种方法同时使用。
宋·郭若虚《图画见闻志·故事拾遗》唐张璪员外画山水松石名重于世。尤于画松特出意象，能手握双管一时齐下，一为生枝，一为枯干，势凌风雨，气傲烟霞。”
To solve the problem, we decided to work on both the marketing and product development fronts, a classic double-pronged strategy.
Learn the next connected idiom: 双管齐下 (shuāng guǎn qí xià) → 下落不明 (xià luò bù míng)
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