Definition
关口有两个主要用法：一是字面意义上的“关隘”，指边境或交通要道上设立的检查站或防御点，如“山海关”；二是比喻义，指事情发展中的关键节点或转折点，如“紧要关口”。作为高级词汇，它常用于正式或书面语境。
noun
strategic passmountain passcheckpointjuncturecritical pointkey moment
Examples
- 关口。Jūnduì zài guān kǒu shè xià le zhòngbīng fángshǒu.The army deployed heavy troops to defend the strategic pass.
- 关口，。Zài zhège zhòngyào guān kǒu, wǒmen bìxū zuò chū zhèngquè de xuǎnzé.At this critical juncture, we must make the right choice.
- 关口。Tánpàn yǐjīng jìnrù le guānjiàn guān kǒu.The negotiations have entered a key point.
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