The mountains here are all covered up with trees.中为什么要把up去掉?cover up有盖住,遮住的意思,为什么不能用呢?

英语翻译----- ------ ------ ------- the mountains,he found a man ------- ------ on the ground,------ The mountains form a b_____ to this phtograph. Some friends on a trip to the mountains climb the mountains翻译 close to the mountains The Rocky Mountains是什么意思 The rocky mountains in the mountains是什么意思? the mountains north of climb the mountains climb mountains 的区别是什么climb the mountains climb mountains 的区别是什么 求翻译：I came across the sea and over the mountains to find you — just to “happiness” hereI　came　across　the　sea　and　over　the　mountains　to　find　you　—　just　to　“happiness”　here 下面的是根据首字母填空The Yellow Mountain is o 1 of the most famous mountains in China.It is in the south of Anhui.Every year 　　t 2 of Chinese and foreigners pay a visit here.It's not f 3 from here.It t 4 you about three hours to get t The Yellow Mountain is o 1 of the most famous mountains in China.It is in the south of Anhui.Every year 　　t 2 of Chinese and foreigners pay a visit here.It's not f 3 from here.It t 4 you about three hours to get there by bus.You can also go there a lot of -----(move) out of the mountains in the past twenty yearsa lot of people-----(move) out of the mountains in the past twenty years 英语翻译Situated on the south coast of Shandong peninsula,Qingdao is a famous tourist city in China.Known as “ pearl on the Yellow sea”,the city backs mountains and faces the sea,the topography here is special,the scenery beautiful and the cl went to the mountains是什么意思 The river runs _____the mountains. climb the mountains的过去式