More importantly, it's just plain useless, and useless buttons are never a good thing.
更重要的是，它毫无用处，而没有用的按钮不是好东西。
Intelligent circuit board control and touch screen buttons, make work more easily.
智能电路板控制和触屏按键操作，令工作更轻松简单。
Intelligent circuit board control and touch screen buttons, make work more easily.
智能电路板控制和触屏按键操作，令工作更轻松简单。
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