Sentence:  Let me pass over the trip to Sante Fe with something of the same speed which made Mrs. Roebuck `` wonduh if the wahtahm speed limit '' ( 35 <WSD>m.</WSD> p. h . ) `` is still in ee-faket '' . 
Meaning of the word marked with <WSD> tags:  the ratio of the distance traveled (in miles) to the time spent traveling (in hours)