The way of rises and falls and how it may change direction.

特别能察觉到其上升、下降及改变方向的动态。

youdao

The area is unstable and prone to rock falls and landslides.

因为该地区地情并不稳定，易于发生岩石坠落和山体滑坡。

youdao

Night falls and a fierce knocking assails your quiet home.

夜幕降临，一阵急促的敲门声打破了家里的沉静。

youdao

A recent study found that emotional stress may put some older adults at risk of falls and broken bones.

VOA: special.2009.03.24

5% And, it turns out that about 75% of the periodic table falls into this category.

而且，它表明元素周期表的,都属于这个种类。

麻省理工公开课 - 固态化学导论课程节选

So I had classmates from Hawaii and Klamath Falls, Oregon So you were in the situation.

所以我的同学中有来自夏威夷的,来自俄勒冈州克拉马斯福尔斯市的,所以当时在那样的形势下。

普林斯顿公开课 - 人性课程节选

The most iconic landmarks in their area are the Aberdulais Falls and Margam Park.

BBC: NEWS | UK | Wales | Identity quest for Wales' regions

As more capital chases a limited number of workers, unemployment falls and wages rise.

FORBES: Though Income Can't Be Legislated, Obama's Minimum Wage Hike Is Not A Bad Idea

If they don't support his program, the government falls and the prime minister is replaced.

CNN: [answer]