Some slight incident may touch off a major war.

一件小事可以触发一场大战。

《新英汉大辞典》

The incident on the frontier touched off a major war.

边境发生的这起事件触发了一场大战。

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Even a limited confrontation can escalate into a major war.

即使是局部的对抗也可能扩大成一场大战。

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Even a limited confrontation can escalate into a major war.

即使是局部的对抗也可能扩大成一场大战。

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