动词短语
中文翻译：使膨胀
同义词：
['expand', 'inflate', 'extend', 'swell', 'enlarge例句：1. The balloon was mandrel expanded to its full size.（气球被扩张到它的最大尺寸。）']
例句：
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1. The balloon was mandrel expanded to its full size.
气球被扩张到它的最大尺寸。
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2. The tires were mandrel expanded to increase their strength.
轮胎被扩张以增加其强度。
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3.The tree branches are mandrel expanded to allow more sunlight to reach the leaves.
树枝被扩张，以便更多的阳光到达树叶。