genetic engineering
noun [ U ] uk/dʒəˌnet.ɪk en.dʒɪˈnɪə.rɪŋ/ us/dʒəˌnet̬.ɪk ˌen.dʒɪˈnɪr.ɪŋ/
遗传（基因）工程（学）
(the science of) changing the structure of the genes of a living thing in order to make it healthier, stronger, or more useful to humans