There are many ways to increase agricultural efficiency in the poorer areas of the world.

　　有很多方法能夠提高世界貧困地區(qū)的農(nóng)業(yè)效率。

　　They admired the smoothness and efficiency with which the business was run.

　　他們欽佩這家公司協(xié)調(diào)高效的管理方式。

　　She arranged everything with her customary efficiency.

　　她以她特有的高效率把一切都已安排妥當(dāng)。

　　Opacity of the eye lens can be induced by deficiency of certain vitamins

　　眼球晶狀體的混濁可由缺乏某些維生素造成。

　　Deficiency of red corpuscles is caused by a lack of iron.

　　紅細(xì)胞生成不足是由缺鐵引起的。