n.[C]

1. 爆發；爆炸，炸裂
   There was a terrible explosion at the chemical plant.

   那家化工廠發生了一起可怕的爆炸事故。

2. 擴張，劇增；劇變
   a population explosion

   人口劇增

3. （感情、笑聲等的）爆發[（+of）]
   We heard an explosion of loud laughter.

   我們聽到一陣大笑。

n.