在没有掌握某些情况以前，我对这个问题宁肯暂不表态。
I'd rather not take a stand over this issue until I have some information.
我认为两种情况皆有可能：一方面，能够用对方的母语与其沟通当然是最好的，且在某些情况下你根本没有别的选择，例如在外国生活，你就必须掌握另一种语言。
On the one hand, being able to communicate with someone is his or her language is the optimal solution. And in some situations such as living in a new country, you simply don't have the choice.
良好使用者，有能力运用英语，虽然在某些情况下有时会发生不精确， 不适当和误解。大致上掌握了复杂的英语，可以理解详细的论证推理。
Has operational command of the language though with occasional inaccuracies and misunderstandings in some situations. Generally handles complex language well and understands detailed reasoning.
良好使用者，有能力运用英语，虽然在某些情况下有时会发生不精确， 不适当和误解。大致上掌握了复杂的英语，可以理解详细的论证推理。
Has operational command of the language though with occasional inaccuracies and misunderstandings in some situations. Generally handles complex language well and understands detailed reasoning.
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