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https://www.econsultancy.com/blog/69549-six-a-b-tests-used-by-duolingo-to-tap-into-habit-forming-behaviour?utm_source=wanqu.co&utm_campaign=Wanqu+Daily&utm_medium=ios&from=singlemessage
您即将离开知乎,请注意您的帐号和财产安全。
https://www.econsultancy.com/blog/69549-six-a-b-tests-used-by-duolingo-to-tap-into-habit-forming-behaviour?utm_source=wanqu.co&utm_campaign=Wanqu+Daily&utm_medium=ios&from=singlemessage