而甲状腺功能衰退症本身则是由出生异常，自身免疫疾病或者包括甲状腺切除手术在内的外科手术等引起的。
Hypothyroidism itself is caused by birth abnormalities, autoimmune diseases or surgery involving the removal of the thyroid.
病毒感染导致免疫系统发生进行性衰退，最后出现“免疫缺陷”。
Infection with the virus results in the progressive deterioration of the immune system, leading to "immune deficiency."
专家说，在越来越全球化的经济环境中，笔译和口译对国家经济衰退的免疫力使得对能说多种语言的人的需求激增。
Translators' and interpreters' relative immunity to the nation's economic down turn also highlights the growing demand for multilingual speakers in an increasingly globalized economy, experts said.
这表明他们的CM V水平更高，而更大程度的CMV感染与衰退的免疫系统有关。
This indicates that their levels of CMV were higher, and greater CMV infection is associated with an ageing immune system.
专家说，在越来越全球化的经济环境中，笔译和口译对国家经济衰退的免疫力使得对能说多种语言的人的需求激增。
Translators' and interpreters' relative immunity to the nation's economic downturn also highlights the growing demand for multilingual speakers in an increasingly globalized economy, experts said.
免疫学说认为：免疫功能的衰退是造成机体衰老的重要因素。
The immunity theory points out that decline of human immune function with aging is a key factor in aging process.
在这几十年以来最严重的经济衰退的中期，很难指出2009美国寻求工作的好去处，因为很明显没有一个美国城市对经济的下降具有免疫性。
In the middle of the worst recession in decades, it wasn't easy to pinpoint the Best Places to Find a Job for 2009, as absolutely no American city was immune to the economic downturn.
越来越多的证据表明造成免疫功能老化和衰退的部分原因是，一种叫做自由基的有毒化合物对细胞的损害长期积累。
A growing body of evidence suggests that aging and decline in immune function may result in part from accumulated damage to cells caused by certain toxic24 compounds called free radicals.
有些则是潜伏多年，直到人进入老年，免疫系统功能衰退时才发病。
Some remain hidden for years, only to trigger disease late in life when the immune system starts to de-crease.
因此新的方法可能建议在免疫系统出现衰退迹象时才开始治疗。
The new policy is expected to recommend that treatment be deferred until there are signs the immune system is weakening.
因此新的方法可能建议在免疫系统出现衰退迹象时才开始治疗。
The new policy is expected to recommend that treatment be deferred until there are signs the immune system is weakening.
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