On the one hand, the elephants' main lake, their only water source (来源), dried up.

一方面，大象的主要湖泊饮水处，也是他们唯一的水源，已经干涸了。

youdao

It was five minutes later that he chose to pour the only water into the pump and began to draw water.

过了五分钟，他选择把仅剩的水倒进水泵里开始抽水。

youdao

If I do as the note says and pour the only water into the pump and no water comes out, I will die of thirst.

如果我照纸条上说的做，把唯一的水倒进水泵里，但没有水出来的话，我就会渴死。

youdao

They walk along the Frijoles stream lined with green trees that once was the only water supply for the valley.

VOA: special.2010.07.05

And so, you make not only water vapor, NOX but you make some nitrous oxides, NOX, or nox as it is known, and this is the precursor to smog.

这样不仅仅得到的水蒸气，但是你会得到一些氮氧化物，或者如大家所知到的nox，这是烟雾的前驱体。

麻省理工公开课 - 固态化学导论课程节选

Water Calvin he was the only one..magnificent Water Calvin would like to have me at his home all the time.

他就是这样一个人。。。伟大的,他总是让我去他家。

普林斯顿公开课 - 人性课程节选

And they are an exceptionally clean power source, producing only water vapor as waste.

CNN: GM takes step toward fuel-cell car

Hydrogen has a high energy density and is clean - burning to leave only water vapour.

BBC: Hydrogen's energy promise improves

Both began a hunger strike in November taking in only water and refusing food supplements.

BBC: Two Palestinians held in Israeli jail end hunger strike