求翻译：因为人的知觉具有选择性的特点，人在观察外界事物时，总是把其中很小一部分当做关注的对象，而把其他部分当做背景。 因此，色彩鲜明，形状独特， 轮廓清晰，具有整体性和容易理解的形象，往往会吸引更多的注意的中心。是什么意思？

Selective characteristics of human perception, people in the observation of external things, always a small part as an object of concern, while the other part as a background. Therefore, the bright, unique shape, outline a clear, holistic and easy-to-understand image tends to attract more attention

Because of the people who are selective characteristics of consciousness, people who look at things, and always a very small part as the subject of attention, and the other part as background. Therefore, vivid colors, shapes, clear, and with the overall contour of the image, easy-to-understand, tend

Because human's consciousness has the selective characteristic, human when observation outside thing, always very small part of regard attention object, but other part of regard background. Therefore, the color is bright, the shape is unique, the outline is clear, has the image which the integrity a

Because the perception of people with selective characteristics, as humans, while observing the outside things, always talk about a very small part of them as objects of interest, and other parts as background. Therefore, colorful, unique shape, clarity of outline, with comprehensive and easy to und

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