It ruins a book to double back the pages as a bookmark.
把书页折起来当作书签用会把书弄坏的。
As a kid on Halloween, did she double back and trick-or-treat at the same house twice because they gave out full-size Baby Ruths?
在她小时候，有没有在万圣节玩“不招待就使坏”的时候为了一块鲁斯宝宝糖两次到同一个人家？
The road ahead is flooded so we have to double back.
前面的路已遭水淹，我们只好原路折回。
Whether you need to double back and revisit some old code, write some more test cases, or even delay a deadline — do it.
无论你是否需要后退两步复查一些老代码，写更多的测试用例，或者甚至是推迟一个截止期限——做下去。
The roads leading to the most beautiful places always twist and turn and double back on themselves.
通往最美丽的地方的路总是曲曲折折而且有时候不得不返回起点。
Apply a single generous coat of Fired Crackle Color. Be careful not to double back. Crackle effect will begin immediately until dry.
涂上一层裂纹釉于器皿上，要一次过施釉，切勿重复施涂；裂纹效果在色釉接近干透时即显现。
At present heat rate calculate of the double back pressure turbine is according to single back pressure turbine, which brings deviation of heat rate calculate.
目前双背压汽轮机是按单背压汽轮机来进行热耗率计算的，由此带来热耗率计算的偏差。
Determination method of optimal back-pressure for optimizing operation of double back-pressure condensers in large-scale power plants has been put forward, and computation model being given.
提出了大型电站双背压凝汽器优化运行最佳背压的确定方法，并给出了计算模型。
The utility model can be arranged on double-back bridge cars, and can also be used on trucks, carriage type cars and engineering cars.
本实用新型可装设在双后桥汽车上，还可以用于货车、厢式车及工程车上。
The utility model can be arranged on double-back bridge cars, and can also be used on trucks, carriage type cars and engineering cars.
本实用新型可装设在双后桥汽车上，还可以用于货车、厢式车及工程车上。
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