宝宝迈出了最初的蹒跚的脚步。

The baby took its first uncertain steps.

《牛津词典》

老人家蹒跚的脚步显出她体质衰弱。

The old woman's halting steps revealed the feebleness of her constitution.

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美国新建核反应堆的蹒跚脚步看来肯定会受阻，很重要的一个原因就是是新的担心意味着成本增加。

America's faltering steps towards new reactors look sure to be set back, not least because new concerns will mean greater costs.

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