Nasa said the mission could take its astronauts further into space than anyone has been before.
The team realised that in the household with Lucy was her mother's boyfriend - a convicted sex offender.
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“逢年过节、日常有困难时多联系，才能真正做到早发现、早干预、早帮扶，牢牢守住不发生规模性返贫致贫底线。”他说。