Noun:

1. plays a small part in a dramatic production

Adjective:

1. not capable of or especially not involving speech or spoken lines;

   "had a nonspeaking role in the play"
   

bit part小角色

cameon.刻有浮雕的宝石或贝壳；（文艺或戏剧）小品；小品文

nonspeakingadj.配角的；临时演员的

1. He was on the cusp between small acting roles and moderate fame.
   他这个配角演员现在已是小荷初露尖尖角。
2. We have several alternates on our team.
   我队有几名替补队员。
3. Firemen turned their hoses on the flames.
   消防队员将水管对准火苗。