赤道における経度1度当たりの長さ。
tbd
Distance per degree of longitude at equator.
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彼女の髪は元の長さまで伸びた。
tbd
Her hair grew back.
Her hair grew back to its original length.
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この川は信濃川の３分の１の長さである。
tbd
This river is about one third as long as the Shinano.
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ＡはＢの５倍の長さがある。
tbd
A is 5 times as long as B.
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