Sabotaged me on purpose蓄意破坏

1）（为阻止敌人或对手成功而）毁坏，破坏（设备、武器或建筑物）。
to damage or destroy equipment, weapons, or buildings in order to prevent the success of an enemy or competitor
2）阴谋破坏，蓄意破坏（计划或行动）。
to intentionally prevent the success of a plan or action
on purpose 故意地。

【例句】
This was a deliberate attempt to sabotage the ceasefire.
这是一次蓄意破坏停火的行为。
 
I didn't do it on purpose - it was an accident.
我不是故意这样做的，是个意外。