那是我自愿做的.I did it of my own free will , ie acting voluntarily.他自愿做这苦差使.He volunteered for the hard and unprofitable job.我是出于自愿做的.I did it of my own free will....
The traditional herbicide is still dominating the present agrochemical market.在目前的农药市场中,传统除草剂仍是除草剂市场的主体.The green agrochemical contains light - sensitive pesticide, trans - gene pesticide , biopesticide, etr.绿色农药包括手性农药 、...