inflate
verb uk/ɪnˈfleɪt/ us/ɪnˈfleɪt/
(FILL WITH AIR)
[ I or T ]（使）充气；（使）膨胀
to make something increase in size by filling it with air
He inflated the balloons with helium. 他给气球充了氦气。
We watch the hot-air balloon slowly inflate. 我们看着热气球慢慢胀大。
(MAKE LARGER)
[ T ]抬高;夸大
to make something larger or more important
They inflated their part in the rescue every time they told the story. 他们每次讲这个故事时都要夸大自己在营救中的作用。