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更新日期:2026-08-14
focus sth on把某物聚集在;集中(精力、注意力等)于:Little Tom focuses sunbeams on a piece of paper with a burning glass,the paper soon blames up.小汤姆用取火镜把阳光聚集在一张纸上,那张纸一会儿就烧着了。