例句 /

Many kidney diseases have no noticeable symptoms until substantial and irreparable damage has been caused. People at the early stages of kidney disease usually do not feel sick at all.

Many kidney diseases have no noticeable symptoms until substantial and irreparable damage has been caused. People at the early stages of kidney disease usually do not feel sick at all.

许多肾脏疾病在发生本质上的不可逆的损害前,通常没有明显的症状。在肾脏疾病早期人们通常根本觉察不到不舒服。