zhè / zhī / tè / zhǒng / bù / duì / de / zhǔ / yào / rèn / wù / jiù / shì / shēn / rù / shān / qū / jiǎo / fěi

这支特种部队的主要任务就是深入山区剿匪。

The main task of this special forces unit is to go deep into the mountains to suppress bandits.