形容词
中文翻译：坚硬的
同义词：
['stiff', 'unyielding', 'inflexible']
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 was so rigid that it made walking difficult.
这条路太硬了，走路很困难。
-
3. The new policy is very rigid and will not be easily changed.
新政策非常严格，不会轻易改变。