And then within plant protection, I came into the discipline of biological pest control which we actually define as the use of living organisms to reduce populations of noxious plant pests.
在保护植物这方面， 我开始接触 生物抑制害虫法， 我们对这方法的定义是 利用活着的有机生物 来降低对于植物有害的 那些害虫数量。