She tried to be more positive about her new job.

　　她力求對新工作更有信心。

　　It will require positive action by all in the industry.

　　這將需要業(yè)內全體同人和衷共濟。

　　Some of the studies show positive results, whereas others do not.

　　有一些研究結果令人滿意，然而其他的則不然。

　　She was positive that he'd been there.

　　她確信他曾在場。

　　He made a very positive contribution to the success of the project.

　　他對項目的成功貢獻良多。