Operons
(operon 的复数) n.[生]操纵子
🗣️ 情景例句
I have spent the last five years working specifically in this field.
过去五年我专门在这个领域里工作。
A cat may look at a king.
猫也有权晋见国王。
so vast is the number of planets,
但是行星的数目是那么庞大，