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单词 火镜
例句 DEFINITIVE EXAMPLES 权威例句〔foci〕If you focus the sun's rays on dry wood with a burning-glass, it will start burning.如果你用取火镜使太阳光线聚焦在干木头上,木头就会燃烧起来。21世纪英汉〔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:2024/11/14 15:12:36