gradient/ˈgreɪdɪənt; `ɡredɪənt/ ndegree of slope, as on a road, railway, etc （公路, 铁路等的）坡度, 斜率 a steep gradient 陡峭的坡度 a hill with a gradient of 1 in 4 (or 25%) 坡度为1:4（或25%）的山岗.
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