-(延长)prolong;extend;protract:
beonone'slastlegs;lingeroninasteadilyworseningcondition;苟延残喘
spread;蔓延
-(向后推迟)postpone;delay:
Incaseofrainthemassmeetingwillbepostponedtillthefirstfineday.大会遇雨顺延。
-(聘请)engage;sendfor:
engageateachers;inviteteacherstoschool;延师
sendforadoctor延医