Denned
穴居（den的过去式与过去分词形式）
🗣️ 情景例句
All right, let's get down to business.
好，我们来谈正事吧。
Any questions?
有什么问题吗？
it would be more like that of a bluebottle buzzing round the room;
那就像一只嗡嗡叫的绿头苍蝇在屋内飞行的轨迹，