hái / zi / men / cè / ěr / qīng / tīng / xiǎng / zhī / dào / sēn / lín / lǐ / fā / chū / le / shén / me / shēng / yīn

孩子们侧耳倾听，想知道森林里发出了什么声音。

The children listened attentively, wanting to know what sound had come from the forest.