disturber
打擾者
Dis·turb·er n.
1. One who, or that which, disturbs of disquiets; a violator of peace; a troubler.
A needless disturber of the peace of God's church and an author of dissension. --Hooker.
2. Law One who interrupts or incommodes another in the peaceable enjoyment of his right.
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disturber
n : a troubler who disquiets or interferes with peace and quiet;
someone who causes disorder and commotion