Sustainable practices aren't a cost—they're an investment in our collective future.

解释：大部分鸟类都是雄性的，而雌鸽却是雌性的，说明了鸟类性别的特殊性。

The more we love our friends， the less we flatter them； it is by excusing nothing that pure love shows itself.

人经常被真相困扰。但是大多数人装作没看见就走了。