Planes must zigzag from one ground beacon to the next, and ascend and descend in steps at each stage obtaining permission from the ground.

飞机从一个地面信标到下一个信标曲折飞行，在每一阶段都要经过地面的许可才能上升和下降。

youdao

They also have difficulty with stairs and descend feet-first.

他们上下楼梯也有困难，下楼时，用脚先下楼。

youdao

The porters earn about three dollars a day as they repeatedly climb and descend the city’s steep hills.

这些搬运工每天都在陡峭的山头上上下下，大概能赚到3美元。

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Blackbirds by the thousands can descend and devour newly dropped seeds.

VOA: standard.2010.06.17

In Genesis 6--I mean, the text you pointed out is a good one but even better, go look at Genesis 6 where you have these nephilim, these divine beings who descend to earth and they mate with female humans.

在《创世纪》的第六章，也就是你们指出来的很好的一章,去看，你们会看到这些伟大的神灵，这些神灵降临凡间，与人类女子结合。

耶鲁公开课 - 旧约导论课程节选

And those plans and commands descend down this spinal cord to drive the muscles in our arm, to guide the arm where we like it to go.

这些计划和指令沿着脊髓而下,驱动我们胳膊的肌肉，指挥我们的胳膊按意志活动。

斯坦福公开课 - 7个颠覆你思想的演讲课程节选

Here, you enter the living areas and descend by staircase to the other two levels.

WSJ: The House That 'Hound Dog' Built | House Call

Through the First Sino-Japanese war, the Russo-Japanese war, and WWI Japan fulfilled its ambition of becoming a major power, only to over-reach and descend into ruin on 8.15.

FORBES: Beginning of "Post-Post-WWII" History?

We breast the pass and descend into the Ameln Valley.

BBC: In search of a lost Moroccan oasis