slow drift

例句：

1. 1. The boat was moving slowly through the calm waters.
   船在平静的水面上缓缓前行。
2. 2. The ship drifted aimlessly in the vast ocean.
   这艘船在广阔的海洋中漫无目的地漂流。
3. 3.The car slowly drifted down the hillside.
   汽车缓缓地沿着山坡下滑。