tā / tīng / wán / zhè / ge / gān / gà / de / gù / shì / zhǐ / shì / dī / zhe / tóu / qiè / xiào / méi / yǒu / shuō / huà

他听完这个尴尬的故事，只是低着头窃笑，没有说话。

After hearing the embarrassing story, he merely lowered his head and tittered without saying anything.