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单词 凸镜
例句 DEFINITIVE EXAMPLES 权威例句〔REFLECT〕The telescope contains a large convex mirror to collect the light. 这架望远镜有一块很大的凸镜来采集光线。朗文写作活用〔bull's-eye〕A planoconvex lens used to concentrate light.凸透镜:用来聚光的凸镜美国传统〔sunglass〕A convex lens used to focus the sun's rays and produce heat, especially for ignition.取火镜:用于聚焦太阳光以产生热量的凸镜片,尤用于点火美国传统
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更新时间:2025/2/21 17:43:16