Ethidium
[化]溴乙非啶,溴化二氨乙苯啡啶
🗣️ 情景例句
They don't have room service at Old Country Inn. Old Country Inn
没有房间服务部。
I'm too old.
我太老。
What happened on the march then?
那么 ，在游行中发生了什么事？