push the envelope

US /pʊʃ ðə ˈɛnvəˌloʊp/
UK /pʊʃ ðə ˈɛnvəˌloʊp/
"push the envelope" picture
1.

突破极限, 创新

to go beyond the usual or accepted limits; to innovate or experiment with new ideas

:
The company is always trying to push the envelope with its new technology.
这家公司总是试图用其新技术来突破极限
Artists who push the envelope often face criticism before their work is accepted.
突破极限的艺术家在他们的作品被接受之前常常面临批评。