understanding可數(shù)嗎

　　There was complete understanding between Wilson and myself.

　　威爾遜和我彼此完全理解與信任。

　　We must tackle the problem with sympathy and understanding.

　　我們必須帶著同情和諒解來處理這個問題。

　　The committee has little or no understanding of the problem.

　　委員會對這個問題了解不多或根本不了解。