问题描述：
句中-one in which语法上如何理解
This mass murder was planned by Osama bin Laden and his al Qaeda network in Afghanistan,and signaled a new threat to our security – one in which the targets were no longer soldiers on a battlefield,but innocent men,women and children going about their daily lives.
This mass murder was planned by Osama bin Laden and his al Qaeda network in Afghanistan,and signaled a new threat to our security – one in which the targets were no longer soldiers on a battlefield,but innocent men,women and children going about their daily lives.
问题解答：
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