Many of our business expansions over the years have been complicated and time-consuming.

多年来，我们有许多次商业扩张遭遇了复杂的局势，浪费了很多时间。

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At present, countries all over the world are consuming more and more oil products.

当今，世界各国对油品的消耗量日益增加。

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At present, countries all over the world are consuming more and more oil products.

当今，世界各国对油品的消耗量日益增加。

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