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 obligation of subjects to the sovereign is understood to last as long, and no longer, than the power lasteth by which he is able to protect them.

The only thing we have to fear is fear itself.

數學的美在于它能夠以最優雅和簡潔的方式描述宇宙。

"Memory is a tricky thing; it can be both a blessing and a curse."

最先進的系統是與自然和諧共存的系統。