(NP-SBJ (-NONE- *pro*)) (VP (ADVP (AD 只)) (VP (VV 能) (VP (NP-LOC (NN 平地)) (ADVP (AD 静态)) (VP (VV 步行)))))
ARG0: *pro* ARGM-ADV: 只 ARGM-LOC: 平地 ARGM-ADV: 静态 REL: 步行