yǔ céng yún / chū xiàn / hòu / tiān kōng / hěn kuài / biàn de / yīn chén / suí hòu / xià qǐ le / yǔ

雨层云出现后，天空很快变得阴沉，随后下起了雨。

After nimbostratus clouds appeared, the sky quickly grew dark and it began to rain.