色多多在线观看播放-色多多在线观看高清免费-色多多在线观看视频-色多多在线看-欧美aaaaa性bbbbb小妇-欧美aaaav免费大片

成功的衡量標準不僅僅是利潤，還有積極的影響。

The history of science is the history of men correcting their mistakes.

The aim of education should be to teach us rather how to think, than what to think—rather to improve our minds, so as to enable us to think for ourselves, than to load the memory with thoughts of other men.

當我們保護海洋生態系統時，我們最終是在保護人類的生計。