This back and forth loading takes time and may not be what you want.
这样的来回加载很耗时，而且可能也不是你所期望的。
Mostly I'll just be using it to get me back and forth from work.
我只是想买一辆能骑着来回上班的就得了。
The lens of this camera can be pulled back and forth.
这架照相机的镜头可以前后伸缩。
Now we will be able to transport cargo back and forth.
现在我们将能往返运送货物。
Now we will be able to transport cargo back and forth.
现在我们将能往返运送货物。
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