形容词
中文翻译：凹的
同义词：
['concave', 'concave-sided', 'convex例句：1. The shape of the rock is concave.（这块岩石的形状是凹的。）2. The concave surface of the dish is smooth.（这个盘子的凹面表面很光滑。）3. The concave roof of the cavern is lined with stalactites and stalagmites.（洞穴的凹顶被石笋和石柱装饰着。）']
例句：
-
1. The shape of the rock is concave.
这块岩石的形状是凹的。
-
2. The concave surface of the dish is smooth.
这个盘子的凹面表面很光滑。
-
3. The concave roof of the cavern is lined with stalactites and stalagmites.
洞穴的凹顶被石笋和石柱装饰着。