During this period,many experts warned of mass starvation in the developing world where populations were expanding faster than crop production.
VOA: special.2009.11.10
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
应用推荐