Lets introduce some color variation on the pencils body, it looks flat right now.
让我们介绍一些对铅笔的体色变化，但现在看起来平坦。
The paper summarized the research process of variation in body color of Syrphidae.
综述了食蚜蝇科昆虫体色变异方面的研究与进展。
Variation of body color were independent with seasons and elevation.
体色变异与发生季节、海拔无关。
Variation of body color were independent with seasons and elevation.
体色变异与发生季节、海拔无关。
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