动词
中文翻译：扩张的
同义词：
['expand', 'enlarge', 'inflate', 'bulge']
例句：
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1. The balloon is expanding as it rises higher.
随着气球升得更高，它正在膨胀。
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2. The company is expanding its operations in the new market.
该公司正在扩大其在新市场的业务。
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3. The engine is expanding because of the high pressure.
由于高压，发动机正在膨胀。