تويت
A slang term : Push the envelope
Push the envelope : do something new and different; do something better
The expression push the envelope comes from airplane pilots. All planes have certain limitations of speed, how high they can fly, and how quickly they can change direction. These limits are known as the plane’s performance envelope. The plane’s abilities are contained within the envelope, like a letter.Pilots who push the envelope take planes up to or even beyond their known limits, in order to find out exactly how well the planes can truly perform
Examples
Each year, Apple releases new products that push the envelope
My brother is always trying to push the envelope with my parents, but sometimes he goes too far
The expression push the envelope comes from airplane pilots. All planes have certain limitations of speed, how high they can fly, and how quickly they can change direction. These limits are known as the plane’s performance envelope. The plane’s abilities are contained within the envelope, like a letter.Pilots who push the envelope take planes up to or even beyond their known limits, in order to find out exactly how well the planes can truly perform
Examples
Each year, Apple releases new products that push the envelope
My brother is always trying to push the envelope with my parents, but sometimes he goes too far
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