形容词短语
中文翻译：非常严肃的
同义词：
['serious', 'solemn', 'grave']
例句：
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1.The teacher's lecture was as grave as an awl.
老师的讲课非常严肃，就像一把针。
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2. The situation was so grave that no one dared to speak out.
情况非常严重，没有人敢说话。
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3. His decision was as grave as an awl.
他做出的决定非常严肃，就像一把针。