Britain ' s deterrent costs less than half the amount of france ' s force de frappe , not least because britain relies heavily on america to provide trident missiles and even components for its warheads 英国花在核威慑力量费用不到法国的一半，主要是因为英国严重依赖美国提供三叉戟导弹，甚至连弹头的部件也不例外。
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