19. sanctimonious： If you say that someone is sanctimonious, you disapprove of them because you think that they are trying to appear morally better than other people.
伪君子的
sanctimonious
英 [ˌsæŋktɪˈməʊniəs] 美 [ˌsæŋktəˈmoniəs]
adj.假装圣洁的
20.sloppy：If you describe someone's work or activities as sloppy, you mean they have been done in a careless and lazy way.
某人做事太草率了，粗枝大叶的
sloppy
英 ['slɒpɪ] 美 [ˈslɑpi]
adj.懒散的，草率的； 稀薄的； 多雨的，泥泞的； 过于伤感的
21.bystander：A bystander is a person who is present when something happens and who sees it but does not take part in it.
旁观者，看热闹的
bystander
英 [ˈbaɪstændə(r)] 美 [ˈbaɪˌstændɚ]
n.旁观者； 局外人； 看热闹的人
