形容词
中文翻译：严肃的
同义词：
['serious', 'grave', 'critical', 'earnest', 'solemn例句：1. He was serious abouthis work and never gave up.（他对工作非常认真，从不放弃。）2. Theteacher was serious about thelesson and made sure everyone understood.（老师对这堂课很认真，确保每个人都理解了。）3. Thesituation was serious', 'andwe needed to take immediate action.（情况很严重，我们需要立即采取行动。）']
例句：
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1. He was serious abouthis work and never gave up.
他对工作非常认真，从不放弃。
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2. Theteacher was serious about thelesson and made sure everyone understood.
老师对这堂课很认真，确保每个人都理解了。
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3. Thesituation was serious, andwe needed to take immediate action.
情况很严重，我们需要立即采取行动。