She can count up to one hundred and backward.
她能数到一百然后再倒着数回来。
I can only think of one backward-compatible change to output: type restriction.
我认为只有一个对输出的向后兼容改变：类型约束。
Jack stopped immediately and took one step backward, back into the shadow of the corner.
杰克立马停住并后退一步回到暗角里。
So such it is on a backward world like this one.
在如同这个的落后的世界，也只能如此。
向后（向前）一步走。 ！
No one can walk backward into the future.
没有人能够倒退着走向未来。
They can even have one eye looking forward and one eye looking backward !
它们甚至可以一只眼睛看前面，另一只眼睛朝后看。
向后退（houtui）一步。
Just one more step backward and he would have fallen to his death.
再后退一步他就会跌下高楼而丧命。
向后退一步。
向后退一步。
When you cross the line, you change your calendar one full day, backward or forward.
穿过这条线时，你要在日历上往后或往前更动一整天。
When you cross the line, you change your calendar one full day, backward or forward.
穿过这条线时，你要在日历上往后或往前更动一整天。
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