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focal points 汉语翻译【医】 焦点 英语解释：名词 focal point:- a point of convergence of light (or other radiation) or a point from which it diverges
同义词：focus, focal point - a central point or locus of an infection in an organism
同义词：focus, focal point, nidus - the concentration of attention or energy on something
同义词：focus, focusing, focussing, focal point, direction, centering
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