本期内容：

China launched two astronauts on a 33-day space mission, the country’s longest-yet. They will dock with an experimental space laboratory, launched last month, that is a testbed for a station that will go into full-time service in 2022. China has spent billions in recent years to match the spacefaring ambitions of America and Russia, and to compete with India and Japan.

Astronaut：宇航员
Dock：对接
Testbed：实验平台

Spacefaring：太空航程

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