transitive. To reduce (the line of a road, railway, or canal) to levels or practicable gradients.
| 单词 | θ210043 |
| 释义 | society > occupation and work > industry > building or constructing > making or working railroads > make or work on railroads [verb (transitive)] > specific processes (1) grade1835 transitive. To reduce (the line of a road, railway, or canal) to levels or practicable gradients. |
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