| 摘要 |
PURPOSE:To facilitate an easy retrieval for the retrieving subject item and thus ensure a smooth learning based mainly on the memory, by applying a mask at the prescribed part of the displayed information. CONSTITUTION:The mask 6 is applied by the masking means 5 to the word or the translated sentence at the prescribed part of the information displayed on the display means 4. In such way, a learning is possible in a free way to remember the word from the translated sentence or remember the translated sentence from the word. |
