一旦 yīdàn HSK5 once Definitions Defs Origin Strokes Stroke Words Sentences Sents Showing: All meanings (2) All meanings 11 yīdàn 11 once 10short time 1 11 sentences 一旦开始,就不能停下来。 yīdàn kāishǐ, jiù bùnéng tíng xiàlai. Once you start, you can't stop. Source: Dong Chinese Dictionary一旦遇到紧急情况怎么办? yīdàn yùdào jǐnjí qíngkuàng zěnmebàn? What if there's an emergency? Source: OpenSubtitles一旦开始了就很难停下来啊。 yīdàn kāishǐ le jiù hěn nán tíng xiàlai a. Once you get going, it's really hard to stop. Source: OpenSubtitles一旦堕入邪路,就很难再回头了。 yīdàn duò rù xiélù, jiù hěn nán zài huítóu le. Once you fall into evil ways, it is hard to turn back. Source: Dong Chinese Dictionary一旦发现漏水,系统会自动报警。 yīdàn fāxiàn lòushuǐ, xìtǒng huì zìdòng bàojǐng. The system will automatically sound an alarm if a leak is detected. Source: Dong Chinese Dictionary他早已交代好,一旦无常,丧事从简。 tā zǎo yǐ jiāodài hǎo, yīdàn wúcháng, sāngshì cóngjiǎn. He had already instructed that in the event of his passing, the funeral should be simple. Source: Dong Chinese Dictionary一旦陷入这种麻烦的纠纷,想抽身可就难了。 yīdàn xiànrù zhè zhǒng máfan de jiūfēn, xiǎng chōushēn kě jiù nán le. Once caught in such a troublesome dispute, it's hard to get away. Source: Dong Chinese Dictionary一旦京城有变,你一定要立刻护送王妃离开。 yīdàn jīngchéng yǒu biàn, nǐ yīdìng yào lìkè hùsòng wángfēi líkāi. If anything happens in the capital, you must escort the princess out immediately. Source: Dong Chinese Dictionary他这人性格太倔,一旦决定的事情谁也劝不动。 tā zhè rén xìnggé tài jué, yīdàn juédìng de shìqing shéi yě quàn bù dòng. He is so stubborn that once he makes up his mind, no one can talk him out of it. Source: Dong Chinese Dictionary古代的国人一旦联合起来,甚至可以废黜不称职的君主。 gǔdài de guórén yīdàn liánhé qilai, shènzhì kěyǐ fèichù bù chènzhí de jūnzhǔ. In ancient times, once the citizens united, they could even depose an incompetent monarch. Source: Dong Chinese Dictionary他多年的心血毁于一旦。 tā duō nián de xīnxuè huǐ yú yīdàn. His years of hard work were ruined in an instant. Source: Dong Chinese Dictionary