an area where the enemies are facing each other during a war and where fighting takes place
Ví dụ:
- Tanks have been deployed all along the front line.
- The regiment was sent to fight in the front line.
the most important position in a debate or an area of work
Ví dụ:
- a life spent in the front line of research
- They are on the front line, talking to the customers about our products.