名词
中文翻译：山谷线
同义词：
['valley', 'valley floor', 'valley bottom', 'valley side']
例句：
-
1. The valley line is marked by a deep river that flows through the area.
山谷线由一条深河穿过该地区。
-
2.The valley line is visible from the top of the mountain.
从山顶可以看到山谷线。
-
3.The valley line is an important landmark for navigation.
山谷线是导航的重要标志。