显著 2.childhood memories 3.向...学习 4.encourage sb. to do sth. 5.go up to the stage 6.拒绝做某事 7.feel awful 8.throw a party 9.put away 10.make a phone call 11.come over 12.make a mistake 13. bathtub 14. bathtub effect 15. memorize 16. research 17. certain 18. noticeable 19. recall 20. ease 21. average 22. catch