一片浓浓的蓝雾低压压地浮在观众头上。
A thick blue mist hung low over the heads of the audience .
随着声音，那团蓝雾抖动起来，逐渐实体化，外形成为一个粗糙的球体。
At the sound , the blue cloud quivered and solidified , becoming roughly spherical .
蓝雾