Ctrl +拖动文本或对象创建文本或对象的一个拷贝抱歉，这里用到了鼠标，这破坏了快捷键的纯粹性，但是我要说，当你需要拷贝一个对象并控制其去向的时候，这是一个很有用的操作。
Ctrl + drag text or an object Creates a copy of the text or object. Apologies to the keyboard purists, but this useful trick does require mouse action.
它应该具有简单的键盘快捷键并能脱离鼠标操作。
Simple keyboard shortcuts and mouseless operation will be of vital importance.
还将UG常用的快捷键归纳在一起，并对如何进行快捷键的设置进行了详细的论述，解决了用鼠标点击菜单慢的问题，节约了时间，方便了操作。
Shortcut keys in common use of UG were made to be inductive and how to set up shortcut keys was discussed to solve problems on slowly using the mouse to click the menu.
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