是不是可以说：按下红色按键来确保设置不被更改。并将手柄转五个点使加脂器开始工作呢。

Step 3 – Depress the red locking button to secure the setting. Five further clockwise rotations of the control knob to start the GREASOMATIC working.

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说明：图像处理能实现利用按键控制一个红色方块在屏幕上显示，程序思路清晰明了，易学习。

Image processing can be achieved using the button control a red box appears on the screen, program ideas clear, easy to learn.

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