And sometimes, it is difficult to find a recognizable ancestor of the test object, so the search has to begin from the top-level object, such as a window.
有时,甚至很难找到测试对象可识别的父类,所以搜索必须从最顶层开始,例如从窗口开始。
The more research we do on more distant species of primates, the better window we have to their common ancestor.