The elderly boom, a surge in the proportion of the population older than 65 years old (included), common in both developed and developing countries, is believed to weaken the society as a whole.
老年人暴涨，就是六十五岁及其以上人口占据总人口比例增加，在发达和发展中国家都普遍，被认为是有害社会的现象。
Bone metastases unfortunately remain a common site of recurrence, with breast and prostate cancer patients representing a substantial proportion of this population.
不幸的是，骨转移仍然是复发的常见部位，乳腺癌和前列腺癌患者占这部分人群相当大的比例。
Bone metastases unfortunately remain a common site of recurrence, with breast and prostate cancer patients representing a substantial proportion of this population.
不幸的是，骨转移仍然是复发的常见部位，乳腺癌和前列腺癌患者占这部分人群相当大的比例。
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