He slipped the pack off and lowered it gently down between two boulders by the stream bed.

他卸下背包，轻轻地放在溪边两块大圆石之间。

youdao

The stream dried up in the winter, leaving the stream bed filled with a pile of rocks like a nest of eggs in assorted sizes newly laid by the stream.

冬天的溪水涸尽，溪底堆满石子，仿佛这溪新生的大大小小的一窝卵。

youdao

The water had raced down the slope and scoured out the bed of a stream.

水顺着山坡流下来，冲刷出一条小河道。

《牛津词典》

He had slipped the pack off and lowered it gently down between two boulders by the stream bed.

NPR: Robert Jordan, Hemingway's Bipartisan Hero

There was no trail that the young man could see, but they were working up and around the face of the mountain and now they crossed a small stream and the old man went steadily on ahead up the edge of the rocky stream bed.

NPR: Robert Jordan, Hemingway's Bipartisan Hero

He sat now by the stream watching the clear water flowing between the rocks and, across the stream, he noticed there was a thick bed of watercress.

NPR: Robert Jordan, Hemingway's Bipartisan Hero