understanding是不可数名词。例句：We need a clear understanding of the problems involved. 我们需要了解清楚所涉及的各种问题。Are they any closer to understanding how the brain works? 他们对大脑功能的了解有进展吗？
相关介绍：
There was complete understanding between Wilson and myself.
威尔逊和我彼此完全理解与信任。
We must tackle the problem with sympathy and understanding.
我们必须带着同情和谅解来处理这个问题。
The committee has little or no understanding of the problem.
委员会对这个问题了解不多或根本不了解。
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