prolong
英 [prə'lɒŋ]
美[prəˈlɑːŋ]
	    - vt. 延长;拖延
 
英英释意
- 1. lengthen in time; cause to be or last longer;
 - "We prolonged our stay"
 - "She extended her visit by another day"
 - "The meeting was drawn out until midnight"
 
- 2. lengthen or extend in duration or space;
 - "We sustained the diplomatic negociations as long as possible"
 - "prolong the treatment of the patient"
 - "keep up the good work"