A single spark can start a prairie fire.

星星之火，可以燎原。

《新英汉大辞典》

Smoking in the field is strictly forbidden in the harvest season; a single spark can start a fire that will wipe out all the crop.

收获季节严禁在田地里吸烟，一点儿火星都可能引起一场大火，烧毁所有的庄稼。

youdao

One has to know that unless there was a news story or other event that would spark interest in a single term or brand - a tool or some other such incident is likely falsifying the data.

人们必须知道，除非有一个新闻故事或其他事件将引发长期或在一个单一的品牌利益-一种工具或一些其他类似的事件可能是伪造的数据。

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Both A Petal and A Single Spark jump between then and now, going from black and white to color.

CNN: CINEMA

In his lyrical, yet unflinchingly political film, A Single Spark, director Park Kwang Su tells the story of Jeon Tae Il, a young labor activist who in the 1960s took on the might of the country's industrialists.

CNN: CINEMA

But this same ex-Goldman person says the firm's penchant for serving in so many capacities on a single deal can create an unwieldy organization and spark internecine squabbles.

FORBES: Magazine Article