Trees release oxygen for us to breathe.
书释放氧气给我们呼吸。
They consume carbon dioxide, and release oxygen.
它们消耗二氧化碳，并释放氧气。
Trees can absorb carbon dioxide and release oxygen.
树木可以吸收二氧化碳和释放氧气。
But it still has this incredible ability to release oxygen.
但它仍然拥有令人不可思议的释放氧气的能力。
They absorb harmful gases and release oxygen so that you can have clean air.
他们吸收有害气体，并释放氧气，这样您可以有干净的空气。
Cells need the oxygen in air to break down foods and release energy.
细胞需要空气中的氧来分解食物，释放能量。
Cells need the oxygen in air to break down foods and release energy.
细胞需要空气中的氧来分解食物，释放能量。
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