白桦

例句：

1. 1. The forest was filled with the sound of birds singing in the early morning.
   森林里充满了清晨鸟儿的歌唱声。
2. 2. The white birch trees stand tall and proud against the blue sky.
   白桦树挺拔而骄傲地矗立在蔚蓝的天空下。
3. 3. The birch tree is a symbol of purity and strength.
   白桦树是纯洁与力量的象征。