something of five/many etc years' standingLAST FOR A PERIOD OF TIMEused to show the time during which something such as an agreement has existed 已经存在五年/多年等的某物〔如协议等〕 an arrangement of several years’ standing 多年的约定
something of five/many etc years’ standing• The medical superintendent of a hospital had to be a duly qualified medical practitioner of five years' standing.
→ something of five/many etc years’ standing at standing2(1)