| 释义 |
DEFINITIVE EXAMPLES 权威例句〔operator〕A chromosomal segment of DNA that regulates the activity of the structural genes of an operon by interacting with a specific repressor.DNA中的染色体元素：DNA中的染色体，它是通过与一特殊的约束因子相互作用而控制遗传子结构基因的行为美国传统〔pass〕The tradition has been passed down from father to son for generations.这一传统由父传子，世代相传。朗文当代〔patrilineal〕In that society, inheritance of land is patrilineal(= the children get the land that their father owned).在那个社会，土地世袭是父传子的。牛津高阶 |