focus /ˈfəʊ.kəs/ A point at which reflected or refracted rays of light converge.

Word · 单词 · A1

focus

/ˈfəʊ.kəs/ verb

A point at which reflected or refracted rays of light converge.

例句 Examples

The heat of sunlight at the focus of a magnifying glass can easily set dry leaves on fire.