She rocked the baby to and fro.

她来回摇动着婴儿。

《牛津词典》

After some to-ing and fro-ing, Elsie and the children moved back to Louisiana.

几番往复后，艾尔西和孩子们搬回了路易斯安那。

《柯林斯英汉双解大词典》

The ship was rolling heavily to and fro.

轮船剧烈地颠簸着。

《牛津词典》

I paced the floor to and fro with heavy strides, as if excited to fury by the observations of the men -- but the noise steadily increased.

VOA: special.2009.02.02

Dylan disappears down the hall fro 10 minutes and comes back with Kim Basinger in tow, who was cutting songs for her film, The Marrying Man, in another room.

NPR: An '80s Story Dripping with Name-Dropping

My concern is with two parts of the plan that could induce collateral damage fro the rest of the world.

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And so the attacks went to and fro until the bell approached to end three minutes of mayhem.

BBC: Incomparable drama in Glasgow on Burns' night