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

The purpose of abstraction is not to be vague, but to create a new semantic level in which one can be absolutely precise.

林業創新不是可選項，而是生存的必需。

未來的能源系統將更加分散化、數字化和脫碳化。

去做高尚的事情，不要整天只是做夢。

I like to think of myself as a normal person who just happens to be able to sing.

最好的建筑是那些邀請參與的建筑。