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The problem is so complicated that it will take us much time to work it out.
这道题这么复杂，我们要用很多时间才能解决。
youdao
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The China's problem is complicated, so our mind should also be complicated.
中国的问题是复杂的，我们的脑子也要复杂一点。
youdao
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The China's problem is complicated, so our mind should also be complicated.
中国的问题是复杂的，我们的脑子也要复杂一点。
youdao