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(v.) = keep up to + date (with), keep up with + the current scene, keep + current

Ex. This will make it yet more difficult for the information worker and the end user to keep up to date with the full range of data bases.

Ex. If the scholar can get at only one a week by diligent search, his syntheses are not likely to keep up with the current scene.

Ex. All librarians working in public service positions should keep current in world affairs and special areas of interest in their library.

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(v.) = keep up to + date (with), keep up with + the current scene, keep + current

Ex: This will make it yet more difficult for the information worker and the end user to keep up to date with the full range of data bases.

Ex: If the scholar can get at only one a week by diligent search, his syntheses are not likely to keep up with the current scene.

Ex: All librarians working in public service positions should keep current in world affairs and special areas of interest in their library.