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

单词	period of usefulness
释义	请查阅词条：usefulness
随便看	wellnesses well-nigh well nigh well-nosed well-noted well-nourished well-nurtured well-oared well-observed well-occupied well off well-offness work train work triangle work under workup work up work up work upon work upon work up to work up to work very hard work visa work way through college 扁鹊为什么叫“神医" 扁鹊真有起死回生的本领吗手为何会比脚灵活手扎了为什么能马上收回来手指为什么比脚趾长手指甲和脚趾甲一样厚吗？手指甲和脚趾甲的生长速度一样吗？手指甲色泽判断健康手指真的还能再造吗手术后吃什么,不能吃什么? Pilotfrequenz Pilothalle Pilotin Pilotlampe Pilotphase Pilotproduktion Pilotprojet Pilotprüfstand Pilotserie Pilotserien_Prüfung