ultimate weapon

基本解释

Even the ultimate weapon is useless if you are too nervous to use it.
看来，如果使用时顾虑太多，即便是终极武器也会变得毫无用处啊。
The answer, then, is that there is no single ultimate weapon that can be used against HIV.
答案是世上没有一个单独的终极武器可以被用来对抗艾滋病毒。
blog.sina.com.cn
Scorponok thought, in his ever-growing paranoia, that the possession of the Ultimate Weapon in the universe was the only thing that could make him and his position safe.
伴随着他一直不断变得严重的狂热，蝎子王认为拥有一件宇宙中的终极武器是确保他自身安全和地位的唯一保证。
blog.sina.com.cn

Could storytelling be the ultimate weapon in the battle against ignorance, intolerance and indifference?
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But if Mr Wahid refuses a deal, Miss Megawati seems to have few qualms about using Indonesia's new ultimate weapon: parliament.
ECONOMIST: Indonesia