擔任佈幕工作英文怎樣寫?

If it's a casual conversation:

I am involved in the preparation of the props.

A formal, written english:

Work in the stage decoration

or involved in work on stage backdrops.

擔任佈幕工作英文怎樣寫?
commentator = 評論者, 節目主持人
host = 廣播 或電視的節目主持人, 幕前的佈幕員.
例: John Lee is the commentator (or host) of this beauty contest.

擔任佈幕工作 :
Holds the post of the cotton cloth curtain work佈幕 :
cotton cloth curtain

Holds the post of the cotton cloth curtain work