A performance art piece is unprecedented. It is difficult to censor since it has a good possibility of never being done before.

A performance art piece is unprecedented. It is difficult to censor since it has a good possibility of never being done before.

行为艺术作品是前所未有的。这是很难审查，因为它有很好的可能性从来没有做过。

-- Jack Bowman 杰克·鲍曼