名词
中文翻译：凸面底
同义词：
['concave bottom', 'convex surface']
例句：
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1.The car's dashboard has a convex bottom that makes it easy to read.
汽车的仪表盘有一个凸面底部，这使得阅读变得容易。
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2. The boat had a convex bottom that made it stable in the water.
这艘船有一个凸面底部，使得它在水上稳定。
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3. The sculpture is made of a convex bottom material that reflects light beautifully.
这个雕塑是由一个凸面底部的材料制成的，它能够很好地反射光线。