实际上，无论是直射光还是反射光，实际上都是光的传播形式，反射光比直射光更保护眼睛是不正确的，保护眼睛是否与光的强度和远近有关。对青少年来说，在一定范围内，光越强越亮越好，离光源越远越好。北京大学人民医
I have the following problem: the application is using the custom itemscontrol called ToolBox. The elements of a toolbox are called toolboxitems and are custom contentcontrol. Now, the toolbox stores
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