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Device to be used as a leaning aid, in particular for remembering foreign languages with a template arranged vertically to written lines on a sheet of text
Device to be used as a leaning aid, in particular for remembering foreign languages with a template arranged vertically to written lines on a sheet of text
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机译:用作助听器的设备,尤其是用于记忆外语的工具,其模板垂直于一页纸上的书写行
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摘要
Device to be used as a leaning aid, in particular for remembering foreign languages, with a template arranged vertically to written lines on a sheet of text, which is displaceable in order to reveal and/or cover what has been written.
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