For example, the American Cancer Society finds that a reason breast cancer survival rates are so high is that there are good methods for early detection of tumors.
2
美国癌症协会把死亡人数的减少部分归结为减少吸烟和改善直肠癌、乳腺癌、前列腺癌的诊疗技术。
Much of the decrease was a result of reductions in smoking and improved detection and treatment of colorectal, breast and prostate cancers, the American cancer Society said.
3
但是在按照美国肿瘤协会的数据，每年有至少有7万了因为肺癌而死亡，然而因患乳腺癌死亡的只有4万人。
But, according to the American cancer Society, more than 70,000 women die annually from lung cancer, while about 40,000 will die of breast cancer this year.
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