4. A translation support method as claimed in claim 1, comprising the further step of; setting predetermined inclusion relations defining conditions for displayed said complex word candidates, wherein displayed said complex word candidates satisfy a predetermined condition based on said predetermined inclusion relations in addition to said predetermined occurrence frequency, and wherein said predetermined condition requires a sequential word group of said sequential word groups to be one of a root complex word candidate which has no parent complex word candidate or a child complex word candidate which occurs independently of the parent complex word.
1. In a machine translation system translating a source language into a target language, a translation support method comprising the steps of: reading a source language text; dividing said text into words; extracting, from sequential said words from said dividing step, sequential word groups which occur a plurality of times throughout said text; displaying ones of extracted said sequential word groups satisfying a predetermined occurrence frequency, as complex word candidates; and allowing user selection of at least one complex word candidate of said complex word candidates, to be treated as a complex word which is to be translated as an integral complex word.