Our art form’s evolution and has always been with extinction. Prominent dance critic with the New York Times, Alastair Macaulay, says: "ballet has died again and again over the centuries," and yet, "phoenix-like, rose again from its ashes". History shows there were periods where ballet hibernated and lacked popularity. This coincided with art form’s changing forums.
请问老师这里的 changing forum 是什么意思?我找了很多词典,上面都只说 forum 有论坛的意思,但是代入原文不合文意,毕竟也不能翻译成“这与艺术形式改变中的论坛类似”……