defile

游客不应该在历史遗迹上涂鸦，这样会亵渎这些神圣的地方。

Tourists should not ___defile these sacred historical sites by scribbling on them.

抗议者因试图用油漆玷污战争纪念碑而被逮捕。

The protestors were arrested for attempting to ___defile the war memorial with paint.

游客向纯净的湖中倾倒垃圾将面临高额罚款。

Visitors who ___defile the pristine lake by dumping trash will be fined heavily.