Electronic catalogs will show you a demonstration of, say, a vacuum cleaner on your screen, and even let you browse through the instruction manual.

电子商品目录会在屏幕上给你放映吸尘器操作示范，甚至还可以让你随便翻阅使用说明书。

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Great for electronic ads and catalogs.

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Guez's art draws heavily on the Christian Palestinian Archive, an electronic database he started that catalogs photographs, passports, birth certificates and other documents from the community's history.

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Electronic searches of different collections at the library currently require using several separate catalogs.

CNN: LOC Web site to offer access to holdings