lǎo / shī / dài / wǒ / men / kàn / le / yí / bù / guān / yú / hǎi / yáng / shēng / tài / de / kē / jiào / piàn / 。老师带我们看了一部关于海洋生态的科教片。The teacher showed us a science education film about marine ecology.