a breath of air
讲解：a breath of air 本义指“一股清风”，It' s really sultry. There is not a breath of air. 真的闷热得很,一点儿风也没有。 它逐渐转喻为person or thing that is welcome and refreshing change，即：使人耳目一新的人或事物。
例如：His ideas about revitalizing the company's activities are like a breath of fresh air. 他使公司恢复元气活动的意见如同一股新鲜空气，令人耳目一新。
英语情景对话：
A: He has a girlfriend already.
B: You are kidding! He just broke up with Ann.
A: Her new girlfriend is a far cry from Ann. She is like a breath of fresh air.
B: I hope I will meet her soon.
参考中文译文：
A :他已经有女朋友了。
B :开玩笑吧。他刚和Ann分手。
A :他的新女友与Ann大不相同，他就像一股清风，令人心神一爽。
B :我希望我能很快见到她。
英语学习笔记：
1.a far cry：大不相同，悬殊遥远的差距
a far cry from：与......差距甚远
Life on a farm is a far cry from what I've been used to.
农场生活与我已过惯的日子迥然不同。
2.break up with：（恋爱）与某人分手
I can't figure out why my girlfriend wanted to break up with me.
我弄不明白为什么我的女朋友要跟我分手。
