Senses
延长/ 延長 extension
(of a line etc.) the act or result of making something longer; lengthening
延长/ 延長 to prolong
To lengthen or stretch out in space or time; to extend or prolong.
延长/ 延長 Yanchang
Yanchang county in 延安 , Shaanxi Province
延长/ 延長 to extend
To lengthen or stretch out in space or distance such as a road or power line
延长/ 延長 long-lasting
(Of a dynasty or reputation) to endure for a long time; long-lasting; enduring