This invasion is tantamount to a declaration of war.

这次侵略就相当于宣战.

《简明英汉词典》

So he did a declaration of war in opposition to the emperor.

于是他发表宣言同皇帝作战.

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COSATU denounced this as " a declaration of war "

南非总工会指责祖马这是在 “ 宣战 ”

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Be polite; write diplomatically; even in a declaration of war one observes the rules of politeness.

要有礼; 要按外交辞令写; 即使在宣战文告里,依然是要遵循礼节的.

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Immediately upon the Italian declaration of war, he put to sea in search of the enemy.

意大利一宣战, 他马上就启碇出海去追寻敌人.

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North Korea has said it would consider interception of its ships a declaration of war.

朝鲜已经表示他们将把拦截朝鲜船只看作对朝宣战.

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Be polite; write diplomatically; even in a declaration of war one observes the rule of politeness.

待人要有礼貌; 写信要有外交技巧; 即使是宣战,还得遵守礼貌的条例.

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