Hot air balloons are very big balloons. They go high in the sky. A big basket is under each balloon. A pilot and riders are in it. 熱氣球非常巨大，可以飛到高空。熱氣球下方有一個大籃子，搭載飛行員跟乘客。 Click HERE to see the full episode transcript, vocabulary, and quiz. Rss Apple Podcaster →
