Became heavy with salt. 富含盐分

44. They ran toward the lowest places on the globe to form the oceans.
    河流向地表低处汇集 形成了海洋
45. They tore minerals from the rocks,
    河流冲刷岩石中带走矿物质
46. And gradually the freshwater of the oceans...
    逐渐的 海洋中的淡水
47. Became heavy with salt.
    富含盐分
48. Water is a vital liquid.
    水是关乎生死的液体
49. It irrigated these sterile expanses.
    它灌溉了不毛之地
50. The paths it traced are like the veins of a body,
    它所留下的痕迹仿佛身体的血管

来自《家园 第一部分 Home Part1》第 47 行