The boy focused sun's ray on a piece of wood with a burning glass.
这个男孩用凸透镜使太阳光线得焦点集于一块木头上。
英文例句大全为您提供focused ray英文例句大全,focused ray英文造句,关于focused ray的英语句子,单词focused ray怎么造句,focused ray英文例句大全有哪些,哪些英语句子是关于focused ray,英语单词focused ray的句子,单词focused ray如何造句,focused ray怎么造句等。