[網(wǎng)絡(luò)] 后退 backsolving: [網(wǎng)絡(luò)] 解決 backsolved: [網(wǎng)絡(luò)] 已解決 backsource: [網(wǎng)絡(luò)] 后備電源；背景源 backsolve: [網(wǎng)絡(luò)] 退回 backsourced: [網(wǎng)絡(luò)] 備用 下載手機(jī)詞典可隨時(shí)隨地查詞查翻譯
