zhè / bù / jì / lù / piàn / jiè / shào / le / dī / kōng / tiào / sǎn / de / fēng / xiǎn / hé / ān / quán / cuò / shī

这部纪录片介绍了低空跳伞的风险和安全措施。

This documentary introduces the risks and safety measures of BASE jumping.