realm: [13] Realm., régime, and regimen are ultimately the same word. All three come from Latin regimen ‘system of government’, a derivative of the verb regere ‘rule’ (from which English gets rector, regent, register, etc). This passed into Old French, where reiel ‘royal’ was grafted into it, producing realme – whence English realm. => rector, regal, régime, regimen, register, royal
realm (n.)
late 13c., "kingdom," from Old French reaume, probably from roiaume "kingdom," altered (by influence of Latin regalis "regal") from Gallo-Roman *regiminem, accusative form of Latin regimen "system of government, rule" (see regimen). Transferred sense "sphere of activity" is from late 14c.
例文
1. This is a target which is surely within the realm of possibility.
これは完全に実現可能な目標です。
2.in the realm of literature
文学分野で
3.The king maintained order within the bounds of his realm .
国王はその王国の境界内で秩序を維持している。
4.The king was concerned about the safety of the realm .
国王は王国の安全に関心を持っている。
5.Their failures in the realm have damaged their self-confidence and creditability.