expression · to swallow something (especially food) whole without chewing it first

吃东西要细嚼慢咽，不能囫囵吞枣，以免消化不良。

idiom · to accept information, knowledge, or ideas without analysis, criticism, or thorough understanding

学习知识不能囫囵吞枣，必须经过深入思考才能真正掌握。