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high expensive

high expensive

high expensive

high expensive

1

At present , the raw materials of biodiesel oil are mostly from Vegetable and animal oil , but they are high expensive .

当前生物柴油的原料主要来自动植物油脂，但其成本偏高。

2

However , the most important reason , I personally think, lies in the high expensive cost of travel .

然而，最重要的原因，我个人认为，在于旅行的高支出费用。

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