如果在线书店提供在线支付，要是你交付的软件缺乏适当的安全性或是经常变动用户界面，书店的顾客就会不满意。
If the online bookstore offers online payment, customers of the bookstore won't be happy if you deliver the software without security in place, or with an ever changing user interface.
要是你想要做的不是他们要求的那样，让他们不满意，这对你来说意味着什么？
If they're not happy or behaving how you want them to, what does that mean for you?
要是你想要做的不是他们要求的那样，让他们不满意，这对你来说意味着什么？
If they're not happy or behaving how you want them to, what does that mean for you?
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