We had drifted downstream.是什么意思？

We had drifted downstream.

我们漂向了下游。

we

pron. 我们，咱们，笔者，本人，朕，人们；

例句
...expensive make-up that we saw being advertised by a beautiful model...
我们所见的由一位漂亮模特代言的昂贵化妆品

had

v. 有（ have的过去式和过去分词 ），（亲属关系中）接受，拿，买到；

例句
He claimed that his parents had abandoned him...
他声称父母遗弃了他。

drifted

v. 漂( drift的过去式和过去分词 )，吹积，漂泊，浮现；

例句
A smell of bread drifted from some distant bakery.
一阵面包的香味从远处的面包房飘来。

downstream

adv. 在下游地，顺流地；adj. 顺流而下的，在下游方向的；

例句
...a district called Lupitu, which in fact was downstream of the dam...
叫勒普顿的地区，实际上在大坝的下游。