当使用跳灯时，即使闪光灯以接近垂直的角度向上方打光，但仍有扩散的光线直接照射到被摄体上。
When bouncing your flash, at certain angles close to that perpendicular plane, direct light will hit your subject.
换个角度看，如果苹果迷只和苹果迷恋爱并结合，我想，这或许可以很好地阻止他们把自己那种迷恋苹果的基因扩散到大众当中去。
On the other hand, making sure that Apple fans only date other Apple fans is a good way of stopping them from spreading their Apple fan genes to the general population, I guess.
从认知心理学的角度分析，它涉及到双重编码理论、加工水平说和激活扩散模型。
KWM involves dual coding theory, depth of processing theory and spreading activation model from the perspective of cognitive psychology.
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