Crown: Shorter height. Avoid crowns that are square, full, or too high.
帽顶：高度上要低一点。不要那种方形，圆形或很高的帽子。
The Mississippi River for North America's crown, with its major tributaries together by a basin of water project for the world's third-largest (approximately 310 million square kilometers).
密西西比河为北美洲河流之冠，与其主要支流加在一起按流域面积计为世界第三大水系(约310万平方公里)。
One is to plant arbor tress with huge crown to shade the square while the square is mainly paved with rigid material.
一种是种植树冠巨大的乔木为广场遮荫，广场上以硬质铺装为主。
One is to plant arbor tress with huge crown to shade the square while the square is mainly paved with rigid material.
一种是种植树冠巨大的乔木为广场遮荫，广场上以硬质铺装为主。
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