n. large tough nonrigid bag filled with gas or heated air
n. small thin inflatable rubber bag with narrow neck
v. ride in a hot-air balloon
v. become inflated
n. 气球
vt. 使成气球状
vi. 膨胀如气球, 激增
1. The children are playing with a red balloon.
孩子们在玩一个红色的气球。
2. She bought a bunch of balloons for the party.
她为聚会买了一束气球。
3. The balloon floated up into the sky.
气球飘向了天空。