(PP-LOC (P 在)
(LCP (IP (NP-SBJ (-NONE- *pro*))
(VP (VV 作战)))
(LC 当中)))
(PU ，)
(NP-SBJ (-NONE- *pro*))
(VP (VV 必须)
(VP (VV 要)
(VP (VP (PP-ADV (P 和)
(NP (NN 队员)))
(VP (VP (VV 保持)
(NP-OBJ (CP (WHNP-1 (-NONE- *OP*))
(CP (IP (NP-SBJ (-NONE- *T*-1))
(VP (VA 良好)))
(DEC 的)))
(NP (NN 默契))))
(VP (ADVP (AD 交互))
(VP (VV 掩护)))))
ARGM-LOC: 在 作战 当中
ARG0: *pro*
ARG0-CRD: 和 队员
ARG0-ADV: 交互
REL: 掩护