我们需要仔细研究提高效率的各种方法的翻译：We need to carefully study all kinds of ways to improve efficiency 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

We need to examine ways to improve efficiency

We need to carefully study all kinds of ways to improve efficiency

We need to study carefully enhance the efficiency each method

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We need to carefully study all kinds of ways to improve efficiency