The changes shall be reviewed, verified and validated, as appropriate , and approved before implementation. # o1 B4 \( H- L2 J0 u8 }8 B- ]$ U
老实说,英文原版可以理解为评审验证确认是必须的,: j! K: T2 m# F4 Q
适当时,在实施前经过批准。+ N) m* x* a! _% Y
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as appropriate 究竟是就前还是就后,还真不好说