roars of laughter                              大笑声

a saccharine smile                            谄笑，谄媚的笑

roll in the aisles                                乐不可支，笑得东倒西歪

scream with laughter                        放声大笑

scream out one’s laughter             放声大笑

flip one’s lid                                 失声狂笑

shout with laughter                          大声笑

snicker                                           窃笑；窃笑着说

snort                                            （讽刺地）高声大笑

shriek with laughter                         尖声狂笑

smile shyly                                      羞嗒嗒地微笑

simmer with laughter                       忍俊不禁

smile on sb.                                    朝某人微笑

smirk                                             傻笑；假笑

smile bitterly                                   苦笑 liuxuepaper.com