We have learned that we cannot live without nature's elements... we need clean air to breathe, food to eat, energy from the sun, etc.

我们还认识到，离开了自然中的元素，我们也无法生存——我们需要呼吸洁净的空气，需要食物来吃，还需要从太阳获得能量。

youdao

We have learned that we cannot live without nature's elements... we need clean air to breathe, food to eat, energy from the sun, etc.

我们还认识到，离开了自然中的元素，我们也无法生存——我们需要呼吸洁净的空气，需要食物来吃，还需要从太阳获得能量。

youdao