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 future of aquaculture lies in diversity—diverse species, diverse methods, and diverse minds working together.

言語(yǔ)可以是傷口，也可以是繃帶。

In the short run, the market is a voting machine but in the long run, it is a weighing machine.

城市的窮人就像樹(shù)的根；看不見(jiàn)，但對(duì)它的生命至關(guān)重要。