资料来源 : pyDict

住在同室的人

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Roommate \Room"mate`\, n.
   One of twe or more occupying the same room or rooms; one who
   shares the occupancy of a room or rooms; a chum.

资料来源 : WordNet®

roommate
     n : an associate who shares a room with you