15秒一个单词2495个(15秒一个单词第2439个)
15秒一个单词2495个(15秒一个单词第2439个)an idea about what something is like or a general understanding of something 概念; 观念,思想; 想法;

Changing conceptions of the world
 这个世界不断变化的观念
an idea about what something is like  or a general understanding of something
 概念; 观念,思想; 想法;






