The change of ephemeral gully headward erosion, gully-wall collapsing and deep-cutting erosion were quantified in the three stages of initial-phase, metaphase and anaphase.

阐明了在浅沟发育初期、中期和后期三个发育阶段，沟头溯源侵蚀、沟壁扩展和沟床下切侵蚀变化规律。

youdao

A little stream of Knowledge trickled slowly through a deep worn gully.

一条知识小溪从深壑幽谷中缓缓流过。

youdao

Then, when Westport was scarcely out of sight, as we were trying to cross a deep muddy gully - another feature of prairie experience that afterward became too familiar to us - the cart stuck fast.

接着，当西部码头还没有完全离开我们视线的时候，我们就得尝试着去穿过一条相当有深度的泥沟。

youdao

Coming up for air, we headed for the approximately 50m-tall Ndoro Waterfall, reached after a steep, unnerving walk into a deep gully.

BBC: The gateway to Kilimanjaro

"The avalanche has actually gone into a gully, and in some places the snow is about 40ft deep, " he said.

BBC: Glencoe skier search resumes after avalanche