动词
中文翻译：充气
同义词：
['blowing up', 'inflating', 'expanding']
例句：
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1.The balloon was inflating when I arrived.
我到达时，气球正在充气。
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2.The tires were inflating before we drove off.
我们开车前，轮胎正在充气。
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3. The football player had to inflate his own ball during the game.
在比赛中，这位足球运动员不得不自己给球充气。