动词短语
中文翻译：处于交战状态
同义词：
['be at war', 'be engaged in a war例句：1. The two countries are at war with each other over the border dispute.（两国因边境争端而交战。）']
例句：
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1. The two countries are at war with each other over the border dispute.
两国因边境争端而交战。
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2. He was at war with his brother over who got to watch the game first.
他和他的兄弟因为谁先看比赛而发生争执。
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3.The conflict has been going on for years and is still at war.
这场冲突已经持续了多年，仍在交战中。