英语词汇“period of usefulness”的翻译、意思、用法、释义-英汉双解词典-礼仪网

单词	period of usefulness
释义	请查阅词条：usefulness
随便看	heinz 57 Heinz, Henry John heir heir apparent heir-at-law heirdom heirdom heiress heiresses heirless heirless heirloom heirlooms heir male of the body heir of the body heir portioner heir presumptive heirs heirs apparent heirs-at-law heirship heirship heirs presumptive heisenberg heisenbergs 担保担名担子担当担待担心担忧担惊受怕担搁担搁 Stopplichtschalter Stoppstellung Stoppuhr Stoppuhr Stoppvorrichtung Stoppzeit Storch Storchennest Storchenschnabel Stormieren