A gradient of 1 in 4 is a rise or fall of one metre for every four metres forward.
A gradient of 1 in 4 is a rise or fall of one metre for every four metres forward.
四分之一的坡度是每前进四公尺升高或下降一公尺。
A gradient of 1 in 4 is a rise or fall of one metre for every four metres forward.
四分之一的坡度是每前进四公尺升高或下降一公尺。