kē / xué / kè / shàng / lǎo / shī / gěi / wǒ / men / jiè / shào / le / shēng / huó / zài / hǎi / yáng / zhōng / de / yú / lóng

科学课上，老师给我们介绍了生活在海洋中的鱼龙。

In science class, the teacher introduced us to ichthyosaurs that lived in the ocean.