mule
n
1 animal that is the offspring of a donkey and a horse, used for carrying loads and noted for its stubbornness 骡; 骡子.
2 (fig infml 比喻, 口) stubborn person 顽固的人.
3 (idm 习语) (as) ,obstinate/,stubborn as a `mule very obstinate or stubborn 非常执拗或顽固.
mule n slipper that is open around the heel 拖鞋.
OK. We can get some more tomorrow. We should finish the floor now. Can you take the other end of this piece of wood? Now you have to pull it to make the surface smooth like that.