fells怎么读？

v.砍倒，打倒( fell的第三人称单数 )，有叶的，覆有叶的( foliate的过去式和过去分词 )，来临，成为...

This tragedy graphically demonstrates the dangers of walking on the fells after dark.这一不幸事件生动地表明天黑后在丘陵地区行走是多么危险.Once he fells ill, take him to the hospital.一旦他病了就把他送到医院去.He fells comfortable with those who speak the Shan...