隨著網際網路的蓬勃發展，網路資源日益豐富。爲了因應多語言主題檢索 的挑戰及資源共享，數個歐洲國家遂發起合作計晝，企圖在不同的控制詞彙 中，利用對映或鏈結的策略來達到線上目綠多語言主題檢索的目的。這些合作 計晝包括MACS及MSAC等，使用者依所選擇的語言，能檢索到不同語言但同 樣主題範圍的所有資料。本文試從文獻的研讀，擬探討多語言主題檢索之涵 義，並藉由國外計晝MACS與MSAC之比較分析，研探國内圖書館線上目綠未 來實現多語言主題檢索之可行性。

Since the Internet has become a new challenge of multilingualism and for resources sharing, several countries in Europe have created collaborative projects aiming to provide multilingual subject access to library catalogs. The projects will enable users to search simultaneously with a single query in the language of their choice for all relevant documents. This article describes the backgrounds of the projects such as MACS and MSAC, and explores a few suggestions for the future developments in multilingual subject access to our library catalogs.