是study,意思是如下几种：
1.学习;研究;调查[U][P1]
The plan is under study.
那个计划正在研究中.
He has made great progress in his English studies.
他在学习英文方面进步很多.
2.研究论文,专题论文[C]
She wrote a study of Shakespeare.
她写了一篇有关莎士比亚的论文.
3.学科;学问[C]
Bioengineering is a new study.
生物工程学是一门新的学问.
4.课题,研究对象[C]
5.书房[C]
Mr.Smith is reading in his study.