city killer

名词 n.

英文释义

名词 n.
  1. An asteroid that could destroy a whole city on impact with Earth. informal
    — This lacuna in space regulation was highlighted earlier this year, when news spread of an asteroid, a potential “city killer” named 2024 YR4, thought to have a small chance of hitting Earth on December 22 2032.

词形变化

city killers plural
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