单词	converging lens
释义	converging lens noun : a lens that causes parallel rays (as of light) to come to a focus Illustration of converging lens S light source L lens F focal point Word History First Known Use 1860, in the meaning defined above
随便看	son's hydrometer son's organ son's yellow rose son, mount son-dix son-in-law son-mor sonable sonal sonally sonance sonances sonancy sonant sonant-surd sonanter sonantest sonantic sonantize sonants sonar sonarman sonarmen sonars sonata

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