C2 noun #96,908 よく出る

The part of the Earth's atmosphere beginning at an altitude of about 50 kilometers (31 miles) and extending outward 500 kilometers (310 miles) or more.

ionosphere 30秒で

  • (noun) The part of the Earth's atmosphere beginning at an altitude of about 50 kilometers (31 miles) and extending outward 500 kilometers (310 miles) or more.
  • (noun) The similar region of the atmosphere of another planet.

Meanings

  1. 1
    noun The part of the Earth's atmosphere beginning at an altitude of about 50 kilometers (31 miles) and extending outward 500 kilometers (310 miles) or more.
  2. 2
    noun The similar region of the atmosphere of another planet.
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