This is the 3127th most frequent Chinese word.
一線
"一線" means "a thread," "a ray," or "a frontline," depending on context.
一线 refers to the prime or front line location of an area.
城市中拥有一线的地理位置通常意味着高房价。
In the city, possessing prime geographical location often implies high housing prices.
一线 here denotes being at the top tier or forefront in one's profession or industry.
明星经历多年奋斗终于成为了一线演员。
After years of struggle, the star finally became a top-tier actor.
一线 signifies a thin or slight chance of hope or opportunity.