[網(wǎng)絡(luò)] 后備電源；背景源 backsourced: [網(wǎng)絡(luò)] 備用 backsolving: [網(wǎng)絡(luò)] 解決 backsources: [網(wǎng)絡(luò)] 后備資源 backsolves: [網(wǎng)絡(luò)] 后退 backsourcing: [網(wǎng)絡(luò)] 回包 下載手機詞典可隨時隨地查詞查翻譯
