drifting cales management

例句：

1. 1. The boat drifted slowly towards the shore.
   船缓缓地驶向岸边。
2. 2. The leaves of the tree were drifting in the wind.
   树叶在风中飘动。
3. 3. The children are drifting off to sleep.
   孩子们正渐渐入睡。