1. It is usually a nonprogressive disease and can be caused by viral infections, drugs, vitamin A deficiency, or genetics.
    该疾病通常是非渐进性的，可由病毒感染、药物、维生素A缺乏或遗传因素引起。

2. nonprogressive在线翻译

2. It is usually a nonprogressive disease and can be caused by viral infections, drugs, vitamin A deficiency, or genetic defects.
    该疾病通常是非渐进性的，能由病毒感染，药物，维生素A缺乏或遗传缺陷所引起。

3. For patients with clinically evident but nonprogressive disease, there are no clearly established guidelines with regard to the indications for operative treatment.
    有临床症状但无进展的，目前还没有明确的关于手术指征的标准。

4. Small nonprogressive radiolucent lines were observed in six hips.
    其中有6例病人出现小的、非进行性透亮线。

5. 公共查询·英语单词

5. The findings may explain why symptoms are often worst on awakening in this disease characterized by sudden, painless, mostly irreversible, and generally nonprogressive visual loss.
    这些结果可以解释，为什么这种疾病的症状经常是在患者清醒的时侯加重，表现为突然性、无痛性、大多数是难以挽救的，和总体上是一种非进行性的视力丧失。