It's because the temperature increase so the particle in the balloon in crease and that makes the balloon got bigger.
热心网友
温度上升使气球中的粒子增加从而气球变大。不过这个英文句子有问题。事实上温度升高引起气球中粒子（空气分子）能量增加，粒子间距离增加，从而气球变大：It's because of the temperature increase that the distances between the particels in the balloon increase. And that makes the balloon get bigger.
热心网友
不过这个英文句子似乎有问题。应该是It's because the temperature increases that the particles in the balloon increase and that makes the balloon got bigger.这样就可以翻译为：就是因为温度上升使气球中的粒子增加而使气球变大。
热心网友
温度升高,气球内物质离子发生膨胀,使得气球变得更大了.
热心网友
正是由于气球中的温度升高，微粒数量增加，才使得气球变大
热心网友
因为温度的提升导致气球内的粒子数量增加，所以气球涨大了。
热心网友
因为温度升高使得气球中的微粒增多，这样气球就变得更大了。