equator

赤道

北極と南極から等距離にあり、地球の中央を一周する想像上の線。

やさしい英語で： An imaginary line around the middle of Earth, equally far from the North and South Poles.

• It is hot near the equator.
• Our ship crossed the equator yesterday.
• Countries along the equator often have warm weather all year.

よく使う表現： near the equator, cross the equator, along the equator

赤道、中央線

丸い物体の上下の端から等距離にあり、中央を一周する線。

やさしい英語で： A line around the middle of a round object, equally far from its top and bottom points.

• Draw a line around the ball's equator.
• The orange was cut along its equator.
• A narrow band circles the sphere's equator.

類義語： midline

よく使う表現： sphere's equator, along the equator, around the equator