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

Corporate social responsibility is not only a moral requirement but also a strategic need.

宇宙的運動是永恒的。

Learning is any change in a system that produces a more or less permanent change in its capacity for adapting to its environment.

我獲得的豐富來自大自然，那是我靈感的源泉。

Take long walks in stormy weather or through deep snows in the fields and woods, if you would keep your spirits up. Deal with brute nature. Be cold and hungry and weary.

The greatest works of literature are those that combine beauty with utility.

雖然觸覺遍布在全身的表皮上，但是我們往往給予孩子的活動卻局限于的部分。

"To write is to rewrite."