Humus is necessary for rapid decomposition of leaves by bacteria and fungi and for recycling by surface roots.

腐殖质是树叶被细菌和真菌迅速分解和根部表面循环过程的必需品。

youdao

Goods may be sent by surface mail or airmail.

货物可通过平邮或空运发送。

《柯林斯英汉双解大词典》

More familiar landscapes have been sculpted by surface erosion.

更多熟悉的地形是由地表侵蚀形成的。

《柯林斯英汉双解大词典》

He said the darkening of the Martian surface during some times of the year was caused by the growth of plants.

VOA: special.2010.07.11

They're stuck to a surface that's provided by the environment that's around them, they're not swimming free in solution.

他们黏联在,周围环境的表面上,而不会在溶液中自由运动

耶鲁公开课 - 生物医学工程探索课程节选

I don't believe we'll-- I'll--come close to scratching the surface of what I would enjoy doing, by the time I've died.

我不能相信-,我能推测死时,自己会对什么感兴趣。

耶鲁公开课 - 死亡课程节选

Residents said they were concerned that problems were caused by surface water and river flooding.

BBC: Drainage study for flood-hit Tirley to go ahead

She said lumps that were smaller and deeper which could not be detected by surface checks would be more easily detected using the ultrasound technique.

BBC: Prodding 'sounds out' breast lumps

The truth is that this is pretty much never the case, that such incidents are almost always caused by surface handling errors, and are remediated very quickly.

FORBES: Just Tell the "Fracking" Truth