tīng / dào / zhè / ge / gān / gà / de / yāo / qiú / tā / dùn / shí / miàn / yǒu / nán / sè / bàn / tiān / shuō / bù / chū / huà

听到这个尴尬的要求，他顿时面有难色，半天说不出话。

Upon hearing this awkward request, he immediately showed a look of embarrassment and couldn't speak for a long time.