We can't wait to hear the patter of tiny feet.

我们恨不得早点有个小宝宝。

《牛津词典》

They will soon be hearing the patter of tiny feet.

他们很快就会有个小宝宝了。

youdao

Mary doesn't want to have children as soon as she's married but all the other girls in the office can't wait for the patter of tiny feet.

玛丽不想一结婚就生孩子，可办公室里其他的姑娘都迫不及待地想要孩子。

youdao

When the shipment arrives sometime this month, Rohayu will swap the scratchy caress of claws for the patter of eight tiny, hairy feet.

CNN: PEOPLE