Moreover the use of "light" is also necessary to shape real feeling.
而对于这种真实感的塑造，光线的运用也是必不可少的。
The key is knowing how to use light to emphasize depth, shape or texture - depending on your artistic intent.
关键是知道如何使用光强调深度、形状或纹理-取决于你的艺术的意图。
Thus, an opening shape of the first integrator (11) can be optimally designed and light use efficiency can be improved.
由此，能够适当地设计第 1积分器（11）的开口形状，能够提高光的利用效率。
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