径流(jìng liú) - collection/runoff, 第四步(dì sì bù) - the fourth step, 叫做 jiào zuò - is called, 河 - hé - river, 湖 hú - lake, 海 hǎi - sea, 地下 - dì xià(underground), 有 - yǒu - to have, 水 - shuǐ - water,

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