The word 高瞻远瞩 is formed by combining the characters 高 (high) and 瞻 (look) into the phrase 高瞻 (look high), and 远 (far) and 瞩 (gaze) into 远瞩 (gaze far), creating a parallel structure where each pair denotes an action of seeing from an elevated position and over a great distance, respectively, to convey the literal sense of observing broadly and deeply.