jì / lù / piàn / jiè / shào / le / jiàn / lóng / bèi / shàng / de / gǔ / bǎn / hé / tā / de / shēng / huó / huán / jìng

纪录片介绍了剑龙背上的骨板和它的生活环境。

The documentary introduced the plates on the stegosaurus's back and its habitat.