名词
中文翻译：扩张
同义词：
['expansion', 'expansion', 'dilatation']
例句：
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1.The balloon was expanding rapidly due to the strong wind.
由于强风，气球正在迅速膨胀。
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2.The tumor is causing significant dilation of the blood vessels around it.
肿瘤正在导致周围血管的显著扩张。
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3. The scientist observed the dilation of the blood vessels in response to the stimulus.
科学家观察到血液在刺激下扩张。