genetic engineering

1. N-UNCOUNT Genetic engineering is the science or activity of changing the genetic structure of an animal, plant, or other organism in order to make it stronger or more suitable for a particular purpose. 基因工程; 基因工程學(xué)

Scientists have used genetic engineering to protect tomatoes against the effects of freezing. 科學(xué)家們已利用基因工程來保護番茄不受嚴(yán)寒的影響。