user-friendly system

基本解释

People who believe that OpenBSD isn't a user-friendly operating system are largely misinformed.
那些认为 OpenBSD 不是用户友好的操作系统的人，大部分是受到了误导。
What makes the NEW SteriPEN JourneyLCD different is its ability to communicate through an LCD screen, making this the most user-friendly system available today.
其最突出特点之一就是首创安装液晶显示屏，便于用户的使用。
The user-friendly calling system had been tried in 2088 county-level security bureaus and 294 city-level bureaus as of last December, the Beijing News reported.
截至去年12月，全国已经有2088个县市级公安部门和294个地市级公安部门实现“三台合一”。
www.chinadaily.com.cn

Even the most ardent supporters of Social Security would surely be dismayed by this complexity, which was developed over the years, presumably by Congressional staffers, looking to do good, but, apparently, with not the slightest concern about making the system minimally user-friendly.
FORBES: Thomas Jefferson Is Rolling in His Grave -- A Rant on Social Security's Complexity
Okay, okay, we're making good use of sarcastic italics, but we do have a point: we take such things for granted to the point where it might not have occurred to naysayers that just being able to minimize a window could make an operating system more user-friendly.
ENGADGET: Chrome OS review (version 19)
Navigating the system also proves easy thanks to Samsung's user-friendly SmartView video management software.
ENGADGET: Samsung Techwin announces two new HD CCTV systems for the security conscious resolution snob