you must only design
你必须只设计
以上为机器翻译结果，长、整句建议使用 人工翻译 。
You must not think that only you can close the sales, install the products, and fine-tune the design all by yourself.
你坚决不能有，只有你亲力亲为才能达成销售，安装产品，美化设计的想法。
youdao
Rule of simplicity: Design for simplicity; add complexity only where you must.
简洁原则：设计尽可能简洁，复杂度能低则低。
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