形容词
中文翻译：更重的负担
同义词：
['heavier', 'heavier']
例句：
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1. The new manager has been assigned a heavier duty than his predecessor.
新任经理的工作量比前任大。
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2. The heavy rain caused the roads to be in a heavier duty state.
大雨导致道路处于更繁重的状态。
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3. The engineers have been assigned a heavier duty than their colleagues.
工程师们的工作量比他们的同事们大。