Again there was a streak of bubbles on the surface of the river.

河面上又出现了一连串的水泡。

youdao

Obviously armoring layer existed in the surface of the river bed.

河床表面具有明显的粗化层。

youdao

The sun shone out warmly and covered the surface of the river with gold.

太阳温暖地照耀四方，在河面傅上一层金色。

youdao

Cleveland's Cuyahoga River caught on fire because of industrial wastes on the surface of the river.

VOA: special.2011.07.31

The spy Kafkor didn't appear to recognize the figure gaping at him from the surface of the river.

NPR: Excerpt: 'Legends'

He says the hippo sprang from the water, furiously attacked the canoe, then slipped back below the surface of the river.

NPR: Congolese Hunt 'Osama' the Hippo

This is the first view scientists have had of a fluvial system - one relating to a river or stream -- from the surface of Mars.

FORBES: Wall of Gale Crater