应该形容词中间加一个连词“and”

occasional and disturbing scenes=“偶尔令人不安/恐慌的场面”

形容词+形容词+名词

(1)occasional adj.偶尔的；间或的；有时发生的

I've had occasional mild headaches all my life. 

间或发作的轻微头疼困扰了我一辈子。

Esther used to visit him for the occasional days and weekends.  

埃丝特过去会偶尔在周末或别的日子来探望他。

(2)disturbing  adj.引起烦恼的;令人不安的;引起恐慌的

There was something about him she found disturbing. 

他身上有某种东西使她不安。

There are disturbing reports of killings at the two centres.  

对这两个中心发生的谋杀的报道令人不安。

(3) scene n.(给人以某种印象的)景象，场景，场面

It's a scene of complete devastation.

那是一副满目疮痍的景象。

Thick black smoke billowed over the scene. 

在这一场景中浓浓的黑烟滚滚升起。