[医]大肠杆菌甲基化缺陷突变株;
例句:
Let's forget about it, it's all water over the dam.
忘了那件事吧, 这已经无法挽回了.
The Aswan Dam helps to control the River Nile in Egypt.
阿斯旺水坝有助于控制埃及的尼罗河.
The labouring people tried their best to dam the river.
劳动人民尽最大努力筑堤防洪.