a break in diplomatic relations的用法和样例：
- Two of their leaders were killed, one of them in a bombing raid by Colombia's army on a camp just across the border in Ecuador, which prompted a break in diplomatic relations.
- There must be a break in the circuit.
- There was a break in the weather last week.
- A break in the pipe was found out.
- An open space or a break in continuity; a gap.