to engage in idle theorizing
...ee to burn down houses while the common people are forbidden even to light lamps 纸上谈兵 To engage in idle theorizing 指鹿为马 Call a deer a horse ..
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to engage in idle theorizing
进行无聊的理论化
以上为机器翻译结果，长、整句建议使用 人工翻译 。