1. 电影;电影院;银幕
You can use celluloid to refer to films and the cinema.
1. a medium that disseminates moving pictures
e.g. theater pieces transferred to celluloid
this story would be good cinema
film coverage of sporting events
2. highly flammable substance made from cellulose nitrate and camphor
used in e.g. motion-picture and X-ray film
its use has decreased with the development of nonflammable thermoplastics