Firstly, we should think about the health care experience as a whole.
首先，我们应该把医疗体验作为一个整体来考虑。
You are on the right track—it is actually the echo of all the leaves as a whole that matters.
你找对思路了——真正重要的是所有树叶整体的回声。
That's a condemnation of the students as a whole, and doesn't explain all campus unhappiness.
这是对学生整体的谴责，并不能解释所有校园的不快。