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

We believe that we need to own and control the primary technologies behind the products we make.

Fishing is not plundering, but the wisdom of symbiosis with the ocean.

代數幾何是研究多項式零點的學科。

Change is uncomfortable, but stagnation is fatal.

絕望是活著的證明。