名词
中文翻译：扩张
同义词：
['expansion', "dilation例句：1. The baby's lungs are beginning to dilate.（宝宝的肺开始扩张。）2. The heart's dilation is a sign of good health.（心脏的扩张是健康的标志。）"]
例句：
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1. The baby's lungs are beginning to dilate.
宝宝的肺开始扩张。
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2. The heart's dilation is a sign of good health.
心脏的扩张是健康的标志。
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3. The swelling in the leg is due to an infection that has caused the blood vessels to dilate.
腿的肿胀是由于感染导致血管扩张引起的。