Lac operon
[化] 乳糖操纵子
🧩 词语组成解析
n. 紫胶, 十万, 许多\\n[医] 虫胶, 虫漆, 乳
n. [生]操纵子
🗣️ 情景例句
I think you can make a difference, Ellen.
我觉得你可以发挥影响力 ，Ellen。
Are most of the lakes located in the north central region?
大多数湖位于向北中央的区域吗？
It's a very old castle. It is the oldest one in Britain.
这个城堡很古老，它是英国最老的了。