As far as mural painting is concerned, there exist both cooperation and repetition.
这些画家在佛寺壁画的创作时，既有竞争，也有合作。
There exist many sources of energy both potential and kinetic.
存在着许多势能和动能的能源。
There exist many sources of energy both potential and kinetic.
势能和动能都有许多来源。
There exist many sources of energy both potential and kinetic.
势能和动能都有许多来源。
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