In addition, the understanding of allusions has close relationship with their contexts, which mainly include the linguistic context and extra-linguistic context, especially the context of culture.

此外，典故语的理解还与其存在的语境密切相关，这主要包括言内语境和言外语境，尤其是其文化语境。

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There are a variety of materials and goods for chemical experiment, which mainly include materials, low-value articles and consumable articles.

化学实验物品数量众多，品种繁杂，主要包括材料、低值品和易耗品等三大类。

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Influencing factors on heat efficiency of tubular heaters are analyzed, which mainly include excess air factor, imperfect combustion and exhaust temperature.

分析了影响管式加热炉热效率的因素，主要包括过剩空气系数、不完全燃烧、排烟温度等。

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That agency mainly acts to ensure that products are made according to good manufacturing practices, which include potency, cleanliness, and stability, that ingredients are generally safe, and that companies are not making unsubstantiated claims about curing or treating disease.

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These include transmission networks as well as hydroelectric and thermal-power projects which needed clearances mainly from the environment ministry.

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