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。
They lacked a clear understanding of the problems.
他们对这问题缺乏清楚的认识。
Before I dive into the specific problems that JSP technology presents, you need a clear understanding of what it claims to do.
在详细探讨JSP技术引发的具体问题之前，您应该清楚地了解这种技术的承诺。
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