7、back and fill───adv.出尔反尔，前进时帆忽张忽缩；adv.出尔反尔；前进时帆忽张忽缩
8、back and back───背靠背
9、change it back───换回来
change back and（双语使用场景）
1、I mean maybe the shrubs will be abundant for a few years, and then it'll change back to tundra.───我的意思是，也许在未来几年里，这里的灌木会很充足，然后它就会变回苔原。
2、The odds would change back and forth all night and they fed the negro rum and lighted cigarettes for him.───一整夜，赌注的比例来回变换着，人们把朗姆酒送到黑人嘴边，还替他点燃香烟。
3、Any take-back program will likely change over time, depending on what works for your customers and company goals.───任何回收计划都可能随着时间的推移而改变，这取决于你的客户和公司的目标。
4、This pattern can be extended to state flags that can change back and forth, but only if it is acceptable for a transition cycle (from false to true to false) to go undetected.───这种模式可以扩展到来回转换的状态标志，但是只有在转换周期不被察觉的情况下才能扩展(从false到true，再转换到false)。
change back and（意思翻译）
换回
change back and（相似词语短语）
1、back and forthing───背对背
2、front and back───[体]双打中一前一后的站法
3、back and forth───反复地，来回地；来回地; 一来一往
4、change───v.改变，转变，（使）不同；（使）变换；替代，更换；交换；货币兑换；将……换成零钱；退还；n.变化，改变；替代物；换洗衣物；零钱，硬币；换乘；全新体验；新月相的出现
5、change back───[通信]倒回；恢复到原来的样子、特性等; 换上原来的衣服
6、permanence and change───永恒与变化
7、back and fill───adv.出尔反尔，前进时帆忽张忽缩；adv.出尔反尔；前进时帆忽张忽缩
8、back and back───背靠背
9、change it back───换回来
change back and（双语使用场景）
1、I mean maybe the shrubs will be abundant for a few years, and then it'll change back to tundra.───我的意思是，也许在未来几年里，这里的灌木会很充足，然后它就会变回苔原。
2、The odds would change back and forth all night and they fed the negro rum and lighted cigarettes for him.───一整夜，赌注的比例来回变换着，人们把朗姆酒送到黑人嘴边，还替他点燃香烟。
3、Any take-back program will likely change over time, depending on what works for your customers and company goals.───任何回收计划都可能随着时间的推移而改变，这取决于你的客户和公司的目标。
4、This pattern can be extended to state flags that can change back and forth, but only if it is acceptable for a transition cycle (from false to true to false) to go undetected.───这种模式可以扩展到来回转换的状态标志，但是只有在转换周期不被察觉的情况下才能扩展(从false到true，再转换到false)。