idiopathic congenital nystagmus

例句：

1. 1. The child's idiopathic laughter is infectious.
   孩子的无故笑声很传染人。
2. 2. The idiopathic condition requires a thorough investigation.
   这种无故的状况需要彻底调查。
3. 3. Idiotproofing is the practice of making sure that all software is tested for idiopathic errors.
   防白痴症是确保所有软件都经过测试以发现无故错误的做法。