英语的谜语哈...whaikindofdogdoesn'tbiteorbark?it's
whaiaroomhasnowallsnodoorsnowindowsandnofloors?It's
whathashandsbutnofeetafacebutnoeyestellsbutdoesnottallk?It's
whaiisblackwhenitiscleanandwhitewhenitisdirty?It's