．翻译句子(英语翻译成汉语，汉语翻译成英语)
我发现学好英语很难。
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我认为不应该允许16岁大的孩子吸烟。
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老师把我们班分为六个小组。
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He read a book written by Lu Xun yesterday。
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He need to think about what will happen if he doesn’t end up as a professional runner.
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