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英语翻译But they point out that the risk of women contracting ca

来源:学生作业帮 编辑:作业帮 分类:英语作业 时间:2024/06/04 17:28:37
英语翻译
But they point out that the risk of women contracting cancer from radiation could be reduced by between 40 and 80 percent if screening began at 50 instead of 45.
主要是:by between 40 and 80 percent
1 理解为:减低到百分之40-80
2减少了百分之40-80
哪个对?主要是为什么?
主要看时reduced to 还是by,
to 就是“减少到”,by就是减少的幅度