Layout and Style - this will change the title fonts and back ground colours.
布局和风格—用于更改标题字体和背景色。
You must place these events in their historical back ground.
必须把这些事情同它们的历史背景联系起来。
This paper refers to the concept of clean production and its back-ground and origin.
介绍清洁生产的概念及其产生的背景。
This paper refers to the concept of clean production and its back-ground and origin.
介绍清洁生产的概念及其产生的背景。
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