On the B. B. C. you for my back towards the dream bags, all direction stray.

背上你为我打点的行囊，一路朝着梦的方向流浪。

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A stray radiation calculation method based on the feature of the R-C system is given for estimating stray light performance in the well-baffled R-C system.

同时，依据R - C系统的特点，提出其杂散辐射的计算方法，用以估计遮光完善R - C系统的杂光水平。

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