动词
中文翻译：膨胀
同义词：
['blowing up', 'inflating', 'swelling']
例句：
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1.The balloon was so full that it couldn't stay afloat anymore.
这个气球太满了，再也浮不起来了。
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2.When the wind blew, the balloon began to rise and float away.
风一吹，气球开始上升并飘走了。
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3. The balloon was filled with helium gas, which made it rise and expand.
气球里充的是氦气，所以它升起来了并且膨胀了。