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Words to Learn

trade-offs

  • n.. Compromises between two desirable but conflicting features.

welfare

  • n.. Health, happiness, and safety.
  • n.. Government aid for well-being.

solitary

  • adj.. Being alone or isolated.
  • n.. A person who is solitary.

contamination

  • n.. The act of contaminating.
  • n.. Substance that contaminates.

lunar litter

  • n.. Trash and debris left on the moon's surface.

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