与美国小学生一起学英文第4册 第9期:氧气(在线收听) |
Oxygen 氧气 Can you touch or feel oxygen in the air? 你能触摸或感受到空气中氧气吗?
Oxygen has very unique characteristics. 氧气有非常独特的性质。
You cannot see oxygen because it doesn't have a color. 你看不到氧气,因为它没有颜色。
Also, oxygen does not melt in water. 而且,氧气不溶于水。
Oxygen does't have a smell. 氧气是无味的。
However, it helps burn other things. 然而,它有助于其它物体的燃烧。
Can you live without oxygen. 没有氧气你能存活吗?
Definitely not. 当然是不行的。
We cannot live without oxygen even for more than a few minutes. 没有氧气我们甚至都活不过几分钟。 |
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