Nothing can stop the man with the right mental attitude from achieving his goal; nothing on earth can help the man with the wrong mental attitude.
Perception is an active process where the brain constructs meaning from sensory input.
高分子化学的引入开辟了一个新的材料世界,其重要性可与哥伦布发现新大陆相媲美。
可持续性不是选择,而是能源行业的必然要求。#