burst into laughter 突然大笑
crack a smile 展颜微笑，莞尔一笑
explode with laughter 哄堂大笑
force a smile 强作欢颜
burst into gales of laughter 爆发出阵阵笑声
grin with delight 高兴的咧嘴而笑
a hearty burst of laughter 一阵爽朗的欢笑
in stitches 笑不可支
laugh at 嘲笑
laugh it off 一笑而过
laughingstock 笑料;笑柄
laugh in the breeze 迎风欢笑
laugh oneself to death 差点没笑死
laugh people around into a better humour 笑得周围的人心情好起来
laugh a hearty laugh 放声大笑，开怀大笑
laugh and grow fat 心宽体胖
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 笑得前仰后合
snicker 窃笑
snort (讽刺、轻蔑地)高声大笑
shriek with laughter 尖声狂笑
smile shyly 羞嗒嗒地微笑
beam with smiles 笑容满面;笑逐颜开
be all smiles 笑容满面, 喜气洋洋
toothpaste smile [美口]牙膏广告上露出皓齿的微笑
simmer with laughter 忍俊不禁
smile on sb. 朝某人微笑
smirk 傻笑;假笑
smile bitterly 苦笑
giggle 咯咯地笑
grin 咧嘴而笑
grin from ear to ear 嘴咧得大大地笑
chuckle 轻声笑;咯咯笑
