形容词
中文翻译：坚硬的
同义词：
['stiff', 'rigid', 'unyielding']
例句：
-
1. The metal is very rigid and cannot be bent easily.
这金属非常坚硬，不容易弯曲。
-
2. The road is very rigid and requires careful driving.
这条路非常坚硬，需要小心驾驶。
-
3. The material is very rigid, making it difficult to shape.
这种材料非常坚硬，难以塑形。