1. necessary  必须的；必要的

    eg : Wearing a helmet while riding a bike is not only wise but necessary for safety.

2. misplaced  不合时宜的；不适宜的

    eg : His jokes  were misplaced at the solemn ceremony, causing discomfort among the guests.

3. shaky 不可靠的；不确切的

    eg : The evidence provided was shaky and not enough to surpport the case.

4. unfeasible 不可行的

    eg : The plan to relocate the village to a remote island was unfeasible due to logistical issues.

5. ignorant 不了解的；无知的

    eg : Many people  remain ignorant of the environmental impact of their daily choices.

6. dissatisfied 不满的；不高兴的

    eg : The employees were dissatisfied with the new management policies.

7. erroneous 错误的

   eg : The statement was found to be erroneous and was quickly corrected.

8. sobering 发人深省的

   eg : The documentary presented a sobering look at the consequences of global warming.

9. intriguing 非常有趣的

   eg : The mechanics of the universe remain an intriguing topic among scientists.

10. extraordinary  非凡的；卓越的

   eg : His dedication to solving complex problems was truly extraordinary.

11. cynical 愤世嫉俗的

   eg : His cynical view of politics made him unpopular at social gatherings.

12. complex 复杂的；难懂的；费解的；

   eg : The situation is more complex than it appears at first glance

13. grateful 感激的

   eg : I am truly grateful for all the support I have received during difficult times.

14. obliged 感谢的；感激的

  eg : We felt obliged to thank our host for the wonderful evening.

15. preferable 更可取的；更好的

  eg : Using renewable energy sources is preferable to relying on fossil fuels.

16. inspiring 鼓舞人心的；激励的

  eg : The story of the young athlete's comeback was truly inspiring.

17. roundabout 拐弯抹角的

  eg : His explanation was roundabout and difficult to follow.

18. implicit 含蓄的；不直接言明的

  eg : He was implicit in expressing love.

19. reasonable 合理的；公平的

  eg : The proposal seems reasonable and fair to all parties involved.

20. appropriate 合适的；恰当的

  eg : Dressing formally is appropriate for the occasion.