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

作家最偉大的工具不是筆，而是引導它的心與思想。

Education is the foundation of conservation—people protect what they understand.

I’m going to use all my tools, my God-given ability, and make the best life I can with it.

The comfort of the rich depends upon an abundant supply of the poor.

The plan is the generator of architecture.

鋼鐵的未來在于回收和減少碳排放。

Mathematics is not just about numbers, equations, computations, or algorithms: it is about understanding.