第 50 课: 热，冷-2

a tree and purple flowers 一颗树，紫色的花儿

a candle 一支蜡烛

Snow is covering the trees. 雪快把树盖上了

Snow is covering the mountains. 雪快把山盖上了

Fire is burning the trees. 那些树着火了

Fire is burning the candle. 那支蜡烛在燃烧

The sun is behind the tree. 太阳在树后面

The sun is behind the clouds. 太阳在云彩后面