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Tim:
Do you know the Chinese opening and reforming policy in 1980s? 
你知道中国上个世纪八十年代的改革开放政策吗？
Tinna:
Oh, I heard something about it. What's your opinion?
听说了一些，你怎么看？
Tim:
It has helped many countries development and quickened the steps to advanced level.
它使得很多农村地区得到了发展，而且加速了向发达社会迈进的进程。
Tinna:
Yes, and what do you think of its disadvantages?
是的，你怎么看它的弊端呢？
Tim:
It does have disadvantages as the good things go.
确实有弊端，在有优势的同时。
Tinna:
So we need to do a lot to prevent the bad things come in.
我们需要做点什么来防止坏的事物进来。