free-running
free-running — noun
1. Free-running is a physical discipline that involves moving rapidly through urban
Free-running is a physical discipline that involves moving rapidly through urban environments — over walls, rails, rooftops, and other obstacles — using jumps, climbs, and acrobatic moves such as flips and spins as a form of creative self-expression.
Every Sunday, Vikram climbs walls and flips between railings while practising free-running with friends.
practise free-running with specific moves (climb, flip)
The free-running demonstration at the plaza featured athletes flipping over rails, which amazed the watching crowd.
Élise started free-running after watching a video of athletes jumping between rooftops.
Sofia leaped across a two-metre gap between rooftops and landed in a roll — a free-running move.
- parkour
Similar urban movement discipline but prioritises efficiency over style; flips and spins are generally avoided.
- freerunning
Alternative spelling of the same activity, equally common in online communities.
文法句型
free-running + [activity noun]
practise / do + free-running
常見錯誤
free-running — adjective
1. Used in biology to describe an internal body process, such as a daily sleep-wake
Used in biology to describe an internal body process, such as a daily sleep-wake cycle, that runs on its own natural schedule and is not controlled or reset by outside factors like sunlight or temperature.
A person in a dark room still shows a free-running circadian rhythm for days.
free-running circadian rhythm — technical collocation
In the lab, the hamsters showed a free-running activity cycle of about twenty-four hours.
Dr. Chen studied free-running rhythms in mice kept in constant darkness for two weeks.
In mice, a free-running rhythm lasts about twenty-five hours without a light cycle.
- endogenous
Describes a process originating from within the organism, close in meaning but broader; not limited to rhythmic cycles.
- self-sustained
Emphasises that the rhythm persists without outside input, used interchangeably in research papers.
- entrained
Describes a rhythm that is reset or synchronised by an environmental cue such as light or temperature.
文法句型
free-running + [biological noun]
用法筆記
Almost exclusively found in biology and chronobiology research writing. Not used in everyday conversation.