But if a bomb can be delivered close to its target bunker, the explosive power of a nuclear warhead may be superfluous; a conventional warhead will usually do.是什么意思_But if a bomb can be delivered close to its target bunker, the explosive power of a nuclear warhead may be superfluous; a conventional warhead will usually do.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句