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focal point

美英

近义词：centre，highlight，focus，direction，focusing，nidus，centering，focussing，

Noun

a point of convergence of light (or other radiation) or a point from which it diverges
a central point or locus of an infection in an organism;
"the focus of infection"
the concentration of attention or energy on something;
"the focus of activity shifted to molecular biology" "he had no direction in his life"

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