Firstly, we should think about the health care experience as a whole.
首先，我們應該把醫療體驗作為一個整體來考慮。
You are on the right track—it is actually the echo of all the leaves as a whole that matters.
你找對思路了——真正重要的是所有樹葉整體的回聲。
That's a condemnation of the students as a whole, and doesn't explain all campus unhappiness.
這是對學生整體的譴責，并不能解釋所有校園的不快。