A catastrophic fall in tourism in the Olympic year is also overshadowing optimism. 雅典奥运会年期间,游客数量的大幅度下降也给原本乐观的前景蒙上了一层阴影。
During the last glaciation maximum, the Yangtze river developed deep incised-valley due to the strong fall of the sea-level. 摘要末次盛冰期,由于海平面大幅度下降,长江发育古深槽。