five by five
- https://www.wordorigins.org/big-list-entries/five-by-five
“Five by five is a slang adjectival phrase meaning good, fine, all is well.”
“But the phrase arises in World War II military jargon. It’s a measure of a radio signal’s strength and clarity on a scale of one to five. Five by five is the best, loud and clear. One by one would be very weak and garbled.”
電影和影集例子：
https://getyarn.io/yarn-clip/910df928-aa50-41ed-bfd8-ac2f18cac92a
“Communications, five by five.” – The Martian (2015)
https://getyarn.io/yarn-clip/ac690f46-a39f-4f97-a686-bb31bda03141
“We are five-by-five for warp.” - Star Trek: Strange New Worlds (2022) – S01E01 Strange New Worlds
“Long as they didn’t find the wire Swan’s wearing, we’re five by five.” – Reacher S02E05
