更好掌握建筑力学的人就能判断出什么是必须的——实现物尽其用，避免空谈。
Someone who understands the forces of construction better and will figure out what is needed - letting those more proficient in practices, but less proficient in principles do the work.
避免枯燥、无效的空谈，并确保你给出了具体的例子。
Omit dull and ineffective generalities and make sure you give concrete examples.
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