It has no colour or shape. It has no smell or taste. We cannot see it, but we can feel it. It is everywhere.
它沒有顏色和形狀。它沒有氣味和味道。我們看不見,摸不著。它無處不在。
It is important to all people. It is also important to animals and plants. We all need it to keep us alive.
它對所有的人來說都很重要。它對動植物而言也很重要。我們都需要它來維持生命。
Look at the kite and the balloon. Look at the plane and the bird. They all need it too. It keeps them high in the sky.
看風箏和氣球。看飛機和鳥。他們也都需要它。它使它們能飛在高空中。
What is it?
它是什么?