那个孤独的身影矗立在山顶，凝望着日落。

The ___solitary figure stood on the hilltop, watching the sunset.

黎明时分，那条小径上只有一名跑步者在锻炼。

At dawn, the path was used by a ___solitary runner.

在广袤的沙漠中，他们发现一匹骆驼独自在绿洲附近徘徊。

In the vast desert, they found a ___solitary camel wandering near an oasis.