Several people are credited with being the first to use microfinance as a tool for social improvement.

VOA: special.2010.06.16

There is some improvement that that will represent, but not nearly as much as if the trans fat is switched out with a healthier fat.

这确实是进步了一些,但进步的程度不如,把反式脂肪换成某种更为健康的脂肪

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

With the gold they found in the mountains came a desire for further improvement.

VOA: special.2009.06.06

Aside from the high jobless rate, Mr.Obama credits his $787 billion economic stimulus plan with the recent improvement in the nation's economy.

VOA: standard.2009.12.04

During the exercises, military observers stay in the background taking notes with suggestions for improvement.

VOA: standard.2010.07.21

But with prices still falling, realtors predict an improvement for March and April.

VOA: standard.2010.03.02

But Maryland Democrat Elijah Cummings noted what he called a major improvement with job losses going from 700,000 per month at the start of the recession to 11,000 in November.

VOA: standard.2009.12.05

President Obama has said he would be willing to speak with Cuba's leaders, but would maintain the embargo as leverage to push for democratic change and an improvement in human rights.

VOA: standard.2009.04.07

Borlaug remained involved with the International Maize and Wheat Improvement Center in Mexico, even after his research took him to other parts of the globe, where he replicated the success he had had in Mexico, building his reputation as father of the "green revolution" in the 1960's.

VOA: standard.2009.09.13