A bull dozer.
注：doze是“打盹”的意思，dozer可以理解為“打盹的人”，而bulldozer是“推土機”的意思。
更多英語謎語
In what year did Christmas Day and New Year's Day fall in the same year?
What is it that someone else has to take before you can get it?
Who is that with a neck and no head, two arms and no hands?
What kind of tree do you find in the kitchen?