in·ter·lop·er /ˌɪntɚ/
干涉者;妨礙者
In·ter·lo·per n. One who interlopes; one who unlawfully intrudes upon a property, a station, or an office; one who interferes wrongfully or officiously.
The untrained man, . . . the interloper as to the professions. --I. Taylor.
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interloper
n : someone who intrudes on the privacy or property of another
without permission [syn: intruder, trespasser]