focal point 焦点
重点
focal point[ noun ]- a point of convergence of light (or other radiation) or a point from which it diverges
<noun.phenomenon>
- a central point or locus of an infection in an organism
<noun.state>
the focus of infection
- the concentration of attention or energy on something
<noun.cognition>
the focus of activity shifted to molecular biology
he had no direction in his life
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