(NP-PRD (QP (CD 一) (CLP (M 个))) (CP (WHNP-1 (-NONE- *OP*)) (CP (IP (NP-SBJ (-NONE- *T*-1)) (VP (VA 艰难))) (DEC 的))) (NP (NN 探索) (NN 历程)))
ARG0: REL: 艰难