The small boat began to drift down the river.

小船在河上漂流。

Golden leaves drift down like snowflakes.

金黄的叶子随即如雪花般飘落.

It takes several months for marine snow to drift down as far as this.

海雪落到这里也要好几个月的时间。

Then simply drift down Rua Augusta, and into another of Lisbon's great squares, the Rossio.

之后沿着奥古斯塔街走，就能进入城内另一个宽阔的广场，罗西乌广场。