“valley bottom”造句，怎麼用valley bottom造句

Domestic mobile telephone is steadily losing ground under offensive of ocean cell phone, exceed the valley bottom falling half to 30% from market share.

Colluvial deposits at the foot of valley slopes usually affect only narrow strips of valley bottom.

I tell you, friends do not cry, your tears make me gloomy, let my heart broken, the sad you, deep shaking me, shattered my heart, pain of all my nerves, your tears are the dark valley bottom can not erase the sadness.