Across
- 3. 重力，严重性
- 4. to make someone feel annoyed or worried
- 5. the work of keeping something in good condition
- 8. to be made up of
- 10. the ability to control one's actions
- 16. extremely or surprisingly
- 18. 评估，评价
- 20. 条件，状况
Down
- 1. in addition; also
- 2. how often something happens
- 6. the state of not being in a place
- 7. the beginning of something
- 9. 面临，揭露，报道
- 11. lasting for all time
- 12. able to be seen
- 13. to take up a space or time
- 14. only; just
- 15. extremely important
- 17. 计算，预测
- 19. a reason for doing something