If you have the opportunity to drive through the gentle, rolling hills amidst lush farmlands, perhaps you will see a horse and buggy driven by a family dressed mostly in black.
如果你有机会开车穿过那些绿油油农田中静谧、逶迤的山丘，也许你会看见驾着四轮马车大部分都穿着黑衣的一家人。
Windows and frames are navigated and focused on any mouse button click, including rolling the wheel, or alternatively driven entirely by the keyboard.
通过点击鼠标按键，滚动滚轮来导航和聚焦窗口和框架，或者完全的通过键盘来操作。
Second, the thickness control system of cold rolling mills driven by two hydraulic cylinders is taken as the research object.
冷轧机轧制的带材较薄，对同步控制精度的要求更高。
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