虽然两个传统的航天竞争对手美国和俄罗斯发射的宇宙飞船多于任何其他国家，但许多小竞争对手正在紧追其后。

Although America and Russia, the traditional space-race adversaries, have launched more spacecraft than any other countries, a slew of smaller players are nipping at their heels.

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美国过去发射过许多宇宙飞船。

America used to send up many spaceships.

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美国过去发射过许多宇宙飞船。

America used to send up many spaceships.

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