?2???????????????????????8?????????? ?????????????????????:??,????
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????:2016????300??????????…
??????????????????6???
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?????????68?????????????
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A???“???”:????????????13??
??????????404????(?)
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???????8?17??????????4??
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50???????????:?????????
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OPEC??2017?????????
??2??????2?1600?????2?
??:???????????????
??:4?27????????
??????????????????6000??