后续访问可能需要持续数年。
通常起病伴炎症活动并持续数年。
Often it starts with active inflammation that may continue for several years.
丝绸花几乎是免费的照顾，并会持续数年。
Silk flowers are virtually care free and will last for years.
然而，对于一些人来说，他们的孤独寂寞会持续数年。
因此大规模的喷发能降低全球表面平均温度数度，时间持续数年。
Massive eruptions can cool the global average surface temperature by several degrees for several years.
是的，美国家庭目前正在缩减各自债务，这个过程需要持续数年时间。
Yes, households are reducing their debt, a process that has years to run.
整个尸体剖检过程持续了大约9个小时，对收集到的材料进行分析则将需要数年时间。
The autopsy had taken about nine hours; analysis of the material gleaned will take years.
空气污染问题已经不是什么新鲜事了，这一问题持续存在了数年。
The problem is not new and has been ongoing for a number of years.
由于工程浩大，持续了数年，耗资万金。
The construction lasted several years and cost a large sum of money.
这种热量叫做衰变热，可以持续数月甚至数年。
This is known as decay heat, which will be present for months or even years.
这种热量叫做衰变热，可以持续数月甚至数年。
This is known as decay heat, which will be present for months or even years.
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