The demand for organic food ( )by about one third every year
3个回答

译文:对有机食品的需求正在以每年大约三分之一增加.

every year现在时态,进行时强调正在增加.

increase by增加了……

increase to增加到……

reduce by减少了……

reduce to减少到……

His income has increased by 30 percent.他的收入增加了三成.

His income has incresed to 3300 yuan a month.他的收入增加到了每月3300元.