1. By 1900 unsafe hospitals and ignorant nurses were things of the past.
    到1900年，不保险的医院与无知的护士都不存在了。

2. The adolescent, with his passion for sincerity, always respects a parent who admits that he is wrong, or ignorant, or even that he has been unfair or unjust.
    青少年酷爱真诚，对于能够承认错误或无知、甚至承认自己做得不分平或不公正的父母，他们总是尊敬的，

3. Nor is it only the ignorant and ill-educated person who has such faith in the bottle of medicine.
    并不只是那些无知和没受过良好教育的人才迷信药瓶子。

4. Now that they are no longer ignorant of the causes of the sickness of our planet, they seek ways to help the Earth, to give back what they take away.
    由于不再无视地球罹难的根源，人们正在寻求各种方法来治疗它，把自己取走的东西归还给地球。

5. He´s not stupid, just ignorant.
    他并不蠢, 只是无知罢了.

6. Carlyle was entirely ignorant of what the bottle in his pocket contained,
    卡莱尔不知道药瓶子里装的是什么药，