转瞬

zhuǎnshùn

in the twinkling of an eye; in an instant; in a flash

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twinkling

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转瞬

zhuǎn shùn

in a twinkle; in a flash:

在草原上， 一会儿晴空万里， 阳光灿烂， 但转瞬间， 又会刮起狂风暴雨。 On the grassland, it may be fine and sunny one moment, then almost immediately heavy wind and storm may come down on you like winking.