The puma was often observed at one place in the morning and at another place twenty miles away in the evening. She saw a large cat only 5 yards away from her. away 是“方位副词”表距离,意为“离...有多远”,前面通常加具体的数字距离,例如,句1是 twenty miles,句2是only 5 yards。后面通常加介词短语from...表示“相距于...”,还可以省略。通过语境可以判断出,句1在away 之后省略了from the one place.