Diploma 毕业文凭,毕业证书
She gained a diploma in Business Administration.
她取得了工商管理的学位证书.
a college diploma
大学文凭

Coordinator 协调者

Make up one's mind 决定
They made up their minds to sellthe house.
他们下决心要把房子卖掉。
Look, I've thought about it a lot,and now I've made up my mind―you can borrow my car!
瞧,这件事我已想了许多,现在我主意已定,你可以借用我的车了.

Spare time 课余时间

In the field of... 在.....领域
He is a prominent scholar in the field of linguistics.
他是语言学领域的杰出学者.