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"Never stop testing, and your products never stop improving." — David ogilvy.
不停地测试，产品就会不断地改进。
youdao
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Never stop improving yourself.
永远不要停止提升自己。
youdao
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Never stop improving yourself.
永远不要停止自我成长。
youdao
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Never stop improving yourself.
永远不要停止自我成长。
youdao