(VP (PP (P 沿着) (NP (CP (WHNP-1 (-NONE- *OP*)) (CP (IP (NP-SBJ (-NONE- *pro*)) (VP (VV 预设) (NP-OBJ (-NONE- *T*-1)))) (DEC 的))) (NP (NN 轨道)))) (ADVP (AD 稳健)) (VP (VV 前行)))
ARG0: *pro* ARG1: *T*-1 REL: 预设