1. Otiose effort (无效的努力)
2. Otiose task (无用的任务)
3. Otiose argument (无益的争论)
4. Otiose endeavor (徒劳的努力)
5. Otiose pursuit (无意义的追求)
6. Otiose gesture (无意义的姿态)
7. Otiose meeting (无谓的会议)
8. Otiose activity (无用的活动)
9. Otiose conversation (毫无意义的对话)
10. Otiose plan (无效的计划)
11. Otiose proposal (无意义的提议)
12. Otiose expenditure (无效的开支)
13. Otiose waiting (徒劳的等待)
14. Otiose decision (无效的决定)
15. Otiose procedure (无用的程序)
16. Otiose arrangement (无意义的安排)
17. Otiose expectation (毫无意义的期望)
18. Otiose request (无用的请求)
19. Otiose instruction (无效的指示)
20. Otiose demonstration (无意义的示范)