#早安环雅#I want to bring out the secrets of nature and apply them for the hap－piness of man． I don't know of any better service to offer for the short time we are in the world．—— Edison 我想揭示大自然的秘密，用来造福人类。我认为，在我们的短暂一生中，最好的贡献莫过于此了。
