同时，肾脏疾病的病兆没有什么特殊性。
但是，双语患者要很久才会显示出外在的病兆。
But the bilingual patient does not show the outward symptoms of the disease until much later on.
如果肺部没能全力发挥其机能，有些病兆就开始出现，有时候这些病兆很微小，以致根本你没能意识其相应严重性。
When your lungs aren't functioning at full capacity, symptoms begin to appear that are sometimes so subtle that you may not recognize them as such.
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