abrupt contrast border的用法和样例：
- Didone: Group of typefaces classified by BS 2916. These are typefaces as developed by Didot and Bodomi which is characterised by the abrupt contrast between thin and thick strokes and no brackets to the serifs , Previously called "Modern".
- A series of provocations led up to the border war.
- The meeting came to an abrupt end.
- Black and white show a striking contrast.
- The difference contrast is notable.