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; 基因工程学

Scientists have used genetic engineering to protect tomatoes against the effects of freezing. 科学家们已利用基因工程来保护番茄不受严寒的影响。