In the Middle East, the proliferation of weapons of mass destruction posed a tangible threat.
In the Middle East, the proliferation of weapons of mass destruction posed a tangible threat.
在中东，大规模杀伤性武器的激增构成明显的威胁（或有形的威胁）。
In the Middle East, the proliferation of weapons of mass destruction posed a tangible threat.
在中东，大规模杀伤性武器的激增构成明显的威胁（或有形的威胁）。