沿海

中国大陆的沿海城市普遍比内陆城市发达。

中國大陸的沿海城市普遍比內陸城市發達。

Chinese coastal cities are generally more developed than the inland ones.

中国大陆的沿海有渤海，黄海，东海和南海。

中國大陸的沿海有渤海，黃海，東海和南海。

The Chinese mainland's coasts are surrounded by the Bohai sea, the Yellow Sea, the East China sea and the South China sea.