But it also made it difficult for them to earn enough money to improve their condition.

VOA: special.2010.02.04

Then you could also think about whether there are changes that could be made to improve diet.

然后,你也可以想想是能否做些改变,来改善食谱

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

"I will not waste time with those who have made the calculation that it's better politics to kill this plan than to improve it.

VOA: special.2009.09.12

Many infections have been increasing even as hospitals have made efforts to improve.

VOA: special.2010.04.21

The incident,however, made Charlie work even harder to improve his playing.

VOA: special.2009.05.03

Mister Obama also made efforts to improve America's international image.

VOA: special.2009.05.02

She says for developing countries to improve their crop output, investment needs to be made in promoting traditional farming techniques.

VOA: standard.2009.10.21

A day after leaving Burma, diplomat Scott Marciel says the message was made clear to Burma's military leaders: the United States is willing to improve relations, but only if there is progress on democracy in the country.

VOA: standard.2009.11.05