总的来说，根据2007年加拿大癌症统计报告，癌症列表中死亡率每年下降2%以上持续了很长时间而且这个比例仍在增长。

Overall, the list of cancers that are decreasing at more than 2% per year is long and growing, according to Canadian cancer Statistics 2007.

youdao

总的来说，根据2007年加拿大癌症统计报告，癌症列表中死亡率每年下降2%以上持续了很长时间而且这个比例仍在增长。

Overall, the list of cancers that are decreasing at more than 2% per year is long and growing, according to Canadian cancer Statistics 2007.

youdao