on the run
One is wanted for a murder she didn't commit. The other is on the run because she knows too much. They are Black Canary and Starling –and, as Gotham City's covert ops team, they're taking down the villains others can't touch.
Verb
go back and forth especially on a regular basis
The ailing and the injured await the Matvei Mudrov at every stop. This mobile medical clinic runs from village to village, stopping for a day to see patients, then continuing across the Russian Far East.
When a ship comes to the end of its working life, it has to be torn apart, piece-by-piece, to dispose of. At that point, little care needs to be taken in getting it ashore, so they're just intentionally run aground.
Are you ever greeted with the phrase "long time, no see" when you run into an old acquaintance? How and why did such a grammatically awkward phrase become a widely accepted part of American speech?
run off
Two years ahead of the 2016 Summer Olympics, sailors training on Rio’s Guanabara Bay face water tainted by sewage and garbage that run-off from poor neighborhoods. Some say it's the most foul place they've ever trained.
ran out of gas
“The Younger’’ Cheruiyot hasn’t been at this blistering business all that long, but he knew one thing. Stay close to the man in the golden singlet... And when the gilded Ethiopian ran out of gas... the Kenyan kid won the race
Phrase
do something that may result in something bad or unpleasant happening
run the risk of
Studies find air expelled during a sneeze travels at an amazing 100 mph (160 km/h). Hold one in and you run the risk of heavy nosebleeds, burst eardrums, or even a stroke.
The dreams of many young educated Chinese run up against the realities of China's rapid economic ascent. Rising living costs and low salaries, the result of a surfeit of university graduates, are dashing high expectations.