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 present is always an unstable place, the past is where we think we know where we are.

化學之美在于它能夠從基本原理中創造出新的可能性。

Legal rules are not merely commands backed by threats.

Silence can be as powerful as words, if you know how to listen.

Cognition refers to all processes by which the sensory input is transformed, reduced, elaborated, stored, recovered, and used.

最好的音樂本質上是為你提供面對世界的東西。

告別昨日是如此艱難