how can mankind achieve a balance between nature and genetic engineering?要求一个一分钟的英语演讲

how can mankind achieve a balance between nature and genetic engineering?要求一个一分钟的英语演讲 How can you how can that be? how can it be.. how can you spell how can be how can that be how can i forget How can we get how can study english how can you see 'How long can I how can they be how can you hate how can you see how can she how can we get How can I go