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1. 相当陡的：declinometer 方位角计 | declivitous 相当陡的 | declivity 倾斜
2. 向下倾斜的：declinometer 磁偏仪 | declivitous 向下倾斜的 | declivity 倾斜
declivitous的反义词
adj
1. sloping down rather steeply
Synonym: downhill downward-sloping