This was a very short visit, but it plunged the little prince into deep dejection.
那是一次非常短暂的访问，可是它却使小王子陷入深深的沮丧。
The most powerful art is often the most ambiguous.
"The principles of a free society are essential for human progress and prosperity."
篮球的发明并非偶然，而是为了满足需求而发展起来的。
解释：在人活动范围内的水就污浊，在野外无人地方的水就清洁。同为一样的水，都是从天边开源，有的混浊有的清洁，这是它们所处环境使它们这样的。