stagger forward and back;be convulsed with laughter;laugh oneself into convulsions [fits];laugh oneself helpless (into convulsions) ;

The crowd must be enjoying the performance because they're laughing their heads off.
观众肯定十分欣赏这个演出,他们笑得前仰后合.
来源:词典精选例句Joe's imitation of famous politicians had us rolling in the aisles.
乔模仿著名政治家的即兴表演让我们乐得前仰后合.
来源:互联网摘选His mother, also convulsed with laughter, appeared on the steps of Agathox Lodge.
他的妈妈, 出来走到阿格少克斯家的台阶上, 也是笑得前仰后合.
来源:词典精选例句Mary just curled up when Jim walked in wearing his funny clothes.
当吉姆穿着滑稽的衣服走进来时,玛丽笑得前仰后合.
来源:《简明英汉词典》Looking at his cute dress, his girlfriend was convulsed with laughter.
看到他这身可爱的妆束, 女朋友笑得前仰后合.
来源:互联网摘选
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