短语词组短语Droning Bureaucrats 官腔公职droning cello 低音大提琴droning tinnitus 耳鸣嗡嗡Droning Damselfly 嗡响蜻蜓droning sound 低沉的声音Hear a jet droning 听到一架喷气式飞机嗡嗡作响target drone 目标靶机 返回 droning