In exchange for this, the owner would get a large share of the crop raised by the tenant farmer.

VOA: special.2010.02.04

Do you have the sense that they are... this crop of young people coming on the scene, they are more willing and more able to do better by America by our world?

您认为他们。,这群登上历史舞台的年轻人，他们是否更愿意更有能力,让美国让世界更美好？

普林斯顿公开课 - 国际座谈会课程节选

He says you can harvest parsley by cutting most of the plant, or leave more of the plant in the ground for a second crop.

VOA: special.2009.06.02

followed by an "off-crop" the next year.

VOA: special.2009.11.10

"Kids really get engaged in science in the garden where it's a kind of fun activity where they're collecting data and seeing how different temperatures will change the amount of water that's needed by a crop, so the science concepts come easily."

VOA: special.2011.06.14

In 1944,when many experts warned of mass starvation in developing nations where populations were expanding faster than crop production, Borlaug began work at a Rockefeller Foundation-funded project in Mexico to increase wheat production by developing higher-yielding varieties of the crop.

VOA: standard.2009.09.13