President Barack Obama has marked the 40th anniversary of the first lunar landing by praising the astronauts of the Apollo 11 mission for inspiring a generation of scientists and engineers.

• 参考翻译：第一次登月40周年纪念日，美国总统奥巴马称赞阿波罗11号任务宇航员激励了一代的科学家和工程师。