袜筒

tā men lún liú tái qǐ jiǎo lai yòng xuē zi de tiē biān líng qiǎo de wǎng wà tǒng shang cèng

他们轮流抬起脚来，用靴子的贴边灵巧地往袜筒上蹭。

They took turns lifting their feet and nimbly rubbing the edges of their boots against the socks.