plough back in
phrasal verbplough something back (in/into something) | plough something back in
- to turn over growing crops, grass, etc. with a plough and mix them into the soil to improve its quality
犁埋；使秸秆还田 - to put money made as profit back into a business in order to improve it
把（利润）再投资 - The money was all ploughed back into the company.
所有的钱都再投资到这个公司。
- The money was all ploughed back into the company.