这次徒步以平缓的爬升上山为特点。

The hike features a ___gentle climb up the mountain.

训练有素的导游带领游客穿过平缓的斜坡观察野生动物。

Trained guides take visitors across ___gentle slopes to observe wildlife.

这条小路坡度平缓，适合初学者。

The path has a ___gentle slope, making it accessible for beginners.