动词
中文翻译：膨胀
同义词：
['swell', 'bulge', 'enlarge']
例句：
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1. The tumor has begun to swell, making it difficult for him to move around.
肿瘤开始膨胀，让他难以活动。
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2. The river is swelling with floodwaters from the heavy rainfall.
河水因为大雨而暴涨。
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3. The swelling in his leg was caused by a deep vein thrombosis.
他的腿肿胀是由深静脉血栓引起的。