So for example, one of the things that we learn when we are dealing with being a percussion player, as opposed to a musician, is basically straightforward single stroke rolls.
举个例子，我们曾经学过一种演奏方法 作为一个打击乐演奏家，而并非音乐家，当我们处理音乐的时候 就是最基本的单击滚奏