xǔ / duō / ōu / zhōu / guó / jiā / cān / yù / le / ōu / zhōu / háng / tiān / jú / de / lián / hé / xiàng / mù

许多欧洲国家参与了欧洲航天局的联合项目。

Many European countries took part in a joint project of the European Space Agency.