How often do you hear that 90% of Facebook users login to the site once per week?
你听说过多少网站能够保证90%的Facebook用户每周登陆一次网站呢？
How often do you have trouble wrapping up the final details of a project, once the challenging parts have been done?
在完成其中最艰难的部分之后，您在处理某一项目的最后细节时是否常常有困难？
How often do you have trouble wrapping up the final details of a project, once the challenging parts have been done?
在完成其中最艰难的部分之后，您在处理某一项目的最后细节时是否常常有困难？
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