资料来源 : pyDict

西距,西行,西走

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

Westing \West"ing\, n. (Naut. & Surv.)
   The distance, reckoned toward the west, between the two
   meridians passing through the extremities of a course, or
   portion of a ship's path; the departure of a course which
   lies to the west of north.