两国成为盟友以对抗共同的威胁。

The two nations became ally against a common threat.

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The two nations became ally against a common threat.

ally 是名词,意思是"盟友、同盟国",指为了共同利益或目标而联合起来的国家或个人。这个词来自拉丁语 alligare(绑定在一起),体现了结盟的紧密关系。

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