为解决这个难题，我想提出如下几点实用的建议。
To crack this hard nut, I would like to propose several practical recommendations as follows.
而杨树抗虫基因工程为解决这个难题提供了一条有效途径。
Poplar anti-insect genetic engineering provides an effective way for solving this difficult problem.
而杨树抗虫基因工程为解决这个难题提供了一条有效途径。
This paper studied effect of gene of insect-resistant on cotton economic character .
应用推荐