另一方面，佛兰德斯的高水位的和法国人对于在比利时盟友后面建设堡垒的厌恶使得法国和比利时边境只建有寥寥几个固定防御点.

But the high water table of Flanders and France’s aversion to building forts behind its Belgian ally left the Franco-Belgian border with only scanty fixed defenses.

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另一方面，波尼恩特露台位于屋顶，通过防风墙防御累范特风。

On the other hand, the Terraza de Poniente is located on the roof and protected of the Levante wind by a windbreak wall.

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另一方面，社会集国不断的扩张和防御体系逐渐复杂化，方形或长方形城址就是在这种背景下出现的。

On the other hand , with the social groupings'ceaseless expeditions and the defense system's gradually complication, quadrate or rectangular city-wall has come into being.

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