push the envelope

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

突破極限, 創新

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.
這家公司總是試圖用其新技術來突破極限
Artists who push the envelope often face criticism before their work is accepted.
突破極限的藝術家在他們的作品被接受之前常常面臨批評。