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

Sustainable agriculture is not a slogan but a responsibility—we must preserve green mountains and clear waters for future generations.

I like a film to have a beginning, a middle, and an end, but not necessarily in that order.

知識的最大敵人不是無知，而是知識的幻覺。