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

"Mathematics is the science of patterns, and nature exploits just about every pattern that there is."

透明度和問責制必須成為每個能源公司運營的核心。

Green finance is not only a social responsibility but also a strategic direction for the future development of banking.

寫作就是活兩次。

The beauty of mathematics only shows itself to more patient followers.

The mathematician's patterns, like the painter's or the poet's, must be beautiful; the ideas, like the colors or the words, must fit together in a harmonious way.