genetic modification
noun [ U ] biology specialized uk/dʒəˌnet.ɪk mɒd.ɪ.fɪˈkeɪ.ʃən/ us/dʒəˌnet̬.ɪk mɑː.dɪ.fɪˈkeɪ.ʃən/
遗传（基因）工程（学）
the process of changing the structure of the genes of a living thing in order to make it healthier, stronger, or more useful to humans
Compare: genetic engineering