形容词
中文翻译：坚硬的
同义词：
['stiff', 'unyielding', 'inflexible']
例句：
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1. The material is rigid enough to withstand heavy loads.
这种材料足够坚硬，能够承受重载。
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2. The team's strategy was rigid and did not adapt well to changing circumstances.
该团队的策略过于僵硬，未能很好地适应变化的情况。
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3. The new president has a rigid attitude towards change.
新总统对变革持强硬态度。