Children like to go back and forth on the swings in the park.

孩子们喜欢在公园的秋千上荡来荡去。

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We'll continue to go back and forth with them. We feel optimistic as well.

我们将继续和他们进一步的谈下去，我们也感到非常乐观。

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We'll continue to go back and forth with them. We feel optimistic as well.

我们将继续和他们进一步的谈下去，我们也感到非常乐观。

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