海滩呈弧形伸展开来。

The beach swept around in an arc.

《牛津词典》

这是一件用猛犸象的象牙雕刻而成的雕塑——肯定是象牙接近尾端的部分，因为其形状纤细、略呈弧形。

It's a sculpture carved from the tusk of a mammoth—it must have been towards the end of the tusk, because it's slim, slightly curved.

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屋顶呈弧形猛扑而下，模拟着这个地区的山脉。

The roofs arch and swoop and fall, mimicking the region's mountains.

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