他用斧柄的粗端轻轻敲了敲门。

He tapped the door gently with the ___butt of the axe.

公园的长椅下散落着很多烟头。

There are many cigarette ___butts under the park bench.

我们在射击场练习时，靶子被整齐地排成了一排。

The ___butts were lined up neatly at the shooting range for our practice.

那只羊用头顶了篱笆。

The sheep ___butts the fence with its head.