“坡度线”的英语可以翻译为：grade line ...

“坡度”的拼音为：pō dù...

“坡度”的英语可以翻译为：falling gradient，slope，inclination，declivity，grade ...

有两个超过13,000英尺的山口，但坡度平缓。There were two passes over 13,000 feet but the slopes were gentle.一连串坡度很大的小山耗尽了骑车人的气力.The series of steep hills sapped the cyclists'strength.我们越往前走,坡度越大.The dip increased as we went on....