This report describes the methods to acquire language information from online databases, which are usually employed to retrieve technical information. Typical uses are shown to obtain equivalent foreign words, language usages, illustrative sentences and statistical linguistic data, by use of JOIS, DIALOG, SDC and BRS online information systems. In comparison with dictionaries and usage books, the online databases provide a vast file of language information, which is unabridged, continually updated and accessible through any words or their combinations. In addition, they give quantitative data such as frequencies in use of words and expressions.
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