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

This paper discusses a nonlinear dynamic model of a single point fuel-injected engine, which can be used for control-ling algorithm development in a spark ignition engine.

讨论单点燃油喷射式火花点火发动机的非线性动态模型，该模型可用于控制算法的火花点火式发动机开发研究。

youdao

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

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

And the single biggest reason why so many companies eventually lose that essential spark of innovative passion as they grow is a failure to institutionalize--through mission, culture and methodology--these critical ingredients.

FORBES: Is Google Simply Wasting Its Money?