它是中国第一颗人造太空卫星。

It was China's first man-made space satellite.

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现在，较大点儿的鸟可以佩上无线电发射器，其功率强到足以让太空卫星 收“听”到。

Now, larger birds can be fitted with radio transmitters powerful enough to be heard in space by satellites.

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各国还在推进太空研究和卫星项目，以提高其全球导航能力。

Nations are also pressing ahead with space research and satellite projects to expand their global navigation abilities.

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