白坚木

例句：

1. 1. The white willow tree is a symbol of purity and innocence.
   白杨树是纯洁和纯真的象征。
2. 2. The willow branches gently sway in the breeze.
   柳枝在微风中轻轻摇曳。
3. 3. The willow tree provides shade during hot summer days.
   柳树在炎热的夏天提供阴凉。