An instance of being imperfectly known or difficult to understand.
难于理解的不被清楚知晓或难于理解的例子
imperfectly shaped or formed.
形状或形式不完美的
Gradually disappearing; imperfectly or only slightly developed. Used of an organ or other part of an animal or a plant.
退化的逐渐消亡的; 没有完全退化或进化程度微小的。用于指动物或植物的器官或其它部分
