(IP (IP-ADV (NP-SBJ (NN 时机)) (VP (VV 歹歹))) (PU ，) (NP-SBJ (-NONE- *pro*)) (VP (ADVP (AD 更)) (VP (VV 需) (VP (VV 精打细算)))))
ARG0: 时机 REL: 歹歹