与美国小学生一起学英文第10册 第7期:人造卫星

 　　Satellites² 人造卫星

　　Do you know what a satellite¹ is? 你知道什么是人造卫星吗？

　　It is an object made by humans. 它是人类制造的产物。

　　Like the moon, it circles around the Earth. 就像月球一样，它围绕地球旋转。

　　How many satellites are there around the Earth? 围绕地球旋转的人造卫星有多少颗？

　　There are over 5000 satellites. 5000多颗。

　　What do they do in the sky? 它们在天上有什么作用？

　　They observed the Earth for many different purposes. 它们观测地球，有不同的用途。

　　Military³ satellites watch enemies, non-military satellite watch road conditions, weather changes and so on. 军事人造卫星用于监视敌人，非军事人造卫星用于监视路况，天气变化等等。

　　Are there any humans inside the satellite? 人造卫星里有人吗？

　　No, they're only machines inside satellite. 没有，里面只有机器。

　　The first satellite in the world was Sputnik, and it was only the size of a soccer ball. 世界上第一颗人造卫星叫斯帕特尼克，它只有足球大小。

1 satellite   

n.卫星

参考例句：

• The moon is a satellite of the earth.月球是地球的一颗卫星。
• A man-made satellite has been launched.人造卫星上天。

2 satellites   

n.卫星( satellite的名词复数 )；人造卫星；卫星国；附庸国

参考例句：

• Many countries have sent up man-made satellites to circle the earth. 许多国家已经发射人造卫星围绕地球运转。 来自《简明英汉词典》
• The previously unidentified objects have now been definitely ascertained as being satellites. 原来所说的不明飞行物现在已证实是卫星。 来自《简明英汉词典》

3 military   

n.军队；adj.军事的，军人的，好战的

参考例句：

• The area has been declared a closed military zone.这个地区已宣布为军事禁区。
• The king was just the tool of the military government.国王只是军政府的一个傀儡。