相關(guān)單詞近義詞 fallback 撤退, reserve 保留, replacement 更換, resource 資源, stand-in 替身, backup 后備, substitute 代用品, spare 備用的, emergency 突發(fā)事件, unreserved 坦率的, last-minute 最后一刻的, late 遲的, understudy 充當(dāng)（某角色的）候補(bǔ)演員...臨近詞standing, standards, standby UPS, standby mode, standby file, standby load, standby time, standby crew, standby code, standby unit, standby face, standby line相似詞standard operating procedure, standard time, standard-bearer, standardize, standing, standing desk, standing joke, standing on your head idiom, 返回 standby