We claim compensation of $1,800 for inferiority of quality.
我们要求得到1800美元的劣质赔偿

inferiority of quality质量低劣

It's difficult to recruit teachers of quality.
要聘请到素质好的老师是很困难的。http://hi.baidu.com/1818horse/item/aa2f9e188cd68e088ebde4df

地道英语Over the moon 欣喜若狂

Rob: And hello, I'm Rob. Now Li, I need to tell something. You know John in the office? Well, he's got a new job.
Li: That's great news. How is he feeling?
Rob: Well, obviously, he's over the moon.
Li: What? John “在月亮上”？这不成了嫦娥了。Is he going to be an astronaut?
Rob: No Li! Well, I don't think so, anyway! I just mean he's extremely pleased and happy.
Has John really jumped over the moon?
Li: Oh I see. I know the nursery rhyme Hey Diddle Diddle, "the cow jumped over the moon", but I've never heard of a man jumping over the moon, so he must be very, very, very excited.
Rob: It's just a saying Li. He's not actually jumping

Li: 什么? 会计师！Are you sure? What's that I can see jumping over the moon?
Rob: Is it a cow? Is it a bird? Is it a plane?
Li: No, it's John, he really is over the moon! And he really is a star!
Rob: Come on Li, let's get down to earth and say goodbye to everybody.
Li: 我们下次的《地道英语》节目再会！Oh, Rob, I think he got stuck over there!

I can't deserve you是什么意思？哈哈，是"我配不上你“哦
I don't feel that I deserve you, but I love yon.我并不认为我配得上你，但是我爱你。
Not worth it, I do not deserve you.不值得的，我不值得你这样。
He's a nothing, he doesn't deserve you.他一无是处，根本配不上你。
It's about time that you break up with him, he doesn't deserve you!该和他分手了，他不值得你爱！
Ding nee ! Tsai Chin, be strong ! he does not deserve you, believe me.唱得很有水准.

How can I persuade you of my sincerity?我如何能够让你相信我的诚意？
http://hi.baidu.com/1818horse/item/fa16a739898013f1e7bb7ac3

自卑的英语怎么说inferiority
英 [ɪnˌfɪəri'ɒrəti]　 美 [ɪnˌfɪri'ɔːrəti]