大敌当前

话说三国时期，蜀汉丞相诸葛亮率军北伐，与魏国大军在五丈原对峙。蜀军兵力不足，粮草供应困难，而魏军兵强马壮，诸葛亮深知大敌当前，形势危急。他一方面励精图治，稳定军心，另一方面积极寻求战略突破口，最终凭借智慧和谋略，将魏军击退。然而，这场战争也耗尽了蜀汉的国力，诸葛亮最终病逝于军中，留下千古遗憾。

huì shuō sān guó shíqí, shǔ hàn chéngxiàng zhūgě liàng shuài jūn běi fá, yǔ wèi guó dà jūn zài wǔ zhàng yuán duìzhì. shǔ jūn bīng lì bù zú, liáng cǎo gōng yīng kùnnán, ér wèi jūn bīng qiáng mǎ zhuàng, zhūgě liàng shēn zhī dà dí dāng qián, xíngshì wēijí. tā yī fāng miàn lì jīng tú zhì, wěndìng jūnxīn, lìng yī fāng miàn jījí xúnqiú zhànlüè tūpò kǒu, zuìzhōng píngjī zhìhuì hé móulüe, jiāng wèi jūn jī tuì. rán'ér, zhè chǎng zhànzhēng yě hào jìn le shǔ hàn de guólì, zhūgě liàng zuìzhōng bìngshì yú jūnzhōng, liú xià qiāngu yíhàn.

During the Three Kingdoms period, Zhuge Liang, the chancellor of Shu Han, led his troops on a northern campaign and confronted the large Wei army at Wuzhangyuan. The Shu army was understaffed, with difficulties in supplying food and fodder, while the Wei army was strong and well-equipped. Zhuge Liang was well aware that a major enemy was at hand and the situation was critical. He worked hard to improve governance, stabilise army morale, and actively sought strategic breakthroughs. Eventually, through wisdom and strategy, he repelled the Wei army. However, the war had exhausted Shu Han's national strength, and Zhuge Liang eventually died in the army, leaving behind a thousand-year-old regret.

作定语、状语；形容情况危急，形势严峻。

zuò dìngyǔ, zhuàngyǔ; xíngróng qíngkuàng wēijí, xíngshì yánjùn

As a predicate or adverbial modifier; to describe a dangerous situation and a serious situation.