求翻译：威尼斯外形像海豚，城市面积 不到7.8平方公里，却由118个小岛组成，177条运河蛛网一样密布其间，这些小岛和运河由大约401座各式各样的桥梁缀接相连。是什么意思？

Venice looks like a dolphin, the urban area of ​​less than 7.8 square kilometers, it consists of 118 islands, 177 Canal spider's web, like clouds in the meantime, these islands and canals, augmented by about 401 various bridge then connected.

Venice looks like a dolphin, the urban area of less than 7.8 square kilometers, but the 118 islands, 177 canals like spider webs, and the island studded with some 401 canals and the prefix to a wide range of bridge.

The Venice contour porpoise, the city area to 7.8 square kilometers, actually is not composed likely by 118 islands during, 177 canal spider webs are equally densely covered, these islands and the canal decorate by about 401 all kinds of bridges meet connected.

Venice looks like a dolphin, the urban area of 7.8 square kilometers, but is made up of 118 Islands, 177 canals Cobweb like clouds, these small islands and canals by approximately 401 variety of bridges connected.

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