His face was a study in concentration.

　　他臉上完全是一副全神貫注的表情。

　　Physiology is the study of how living things work.

　　生理學是研究生物功能的學科。

　　This study represents a major expenditure of time and effort.

　　這項研究意味著要耗費大量的時間和精力。

　　This study is the cornerstone of the whole research programme.

　　此項研究是整個研究計劃的基礎(chǔ)。

　　The report studies the organization of labour within the company.

　　這個報告研究了公司內(nèi)部的人力分配問題。