What is happiness to you
16. 回家很晚 stay out late
17. 出现;显露 show up
18. 径直走到 go straight to
19. 播放音乐 put on music
20. 根据,依据 according to
21. 拉开窗帘 pull back the curtains
22. 感到害怕 feel/be frightened
23. 排除可能性 rule out the possibility
24. 负责这个案件 take charge of the case
25. 令人信服的证据 convincing evidence
26. 调查 look into
27. 放弃 give up
28. 取得巨大进步 make much /great progress
29. 对……感到失望 be disappointed with
30. 在某人身上做研究 do research on