..so, until then, he alone is their protector. 因此在那之前 只有成年雄性水雉才能保护它们

80. He has not just one...
    雄性水雉养育着不止一只
81. ..but four newly-hatched chicks.
    而是多达四只刚孵化的孩子
82. They won't be able to fly for another six weeks...
    雏鸟六周后才能飞行
83. ..so, until then, he alone is their protector.
    因此在那之前 只有成年雄性水雉才能保护它们
84. Walking on water is not straightforward...
    水上行走并非易事
85. ..so he must show them how to be a lily-trotter.
    因此雄性水雉要教雏鸟如何在睡莲上行走
86. The floodwaters make the perfect training ground.
    高涨的水位使这里成为了绝佳的训练场

来自《行星地球 第三季 第四集 Planet Earth S03E04 淡水》第 83 行