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
How much do stamps cost?
邮票多少钱？
Nice to meet you, too.
认识你我也很高兴。
Are these bags heavy? No, they're light.
不，是轻的。