Across
- 2. problem that confuses you
- 4. look for
- 7. a.公众的
- 8. able to buy or use
- 9. give up
- 11. noun of "free"
- 13. easy
Down
- 1. study
- 3. its meaning is similar to "characteristic"
- 5. n.图像；形象；影像；意象 v.反映；想像；象征；使…成像
- 6. adj. 私人的
- 10. traveling across a shallow area in a stream that can be forded
- 12. to copy or move programs or information into a computer's memory