up 用光
例句：
I used up all the toothpaste, so I'm going to have to buy some more. 牙膏都用完了，我得去再买一些。
grass is always greener on the other side of the fence.总是觉得别人得比自己得好
例句：
Teenagers always think their friends have better lives. They always think the grass is always greener on the other side of the fence.
青少年经常觉得他们朋友得生活比他们自己的话好。他们老觉得，隔壁得草更绿啊。
and square 公平公正得
例句：The other team didn't cheat. They won the game fair and square. 另外一个对没有作弊，他们赢这场比赛完全公平公正。