arroyo|arroyos

徒步旅行时，我们不得不跨过这条干涸的冲沟。

During the hike, we had to cross the dry ___arroyo.

暴雨过后，干涸的河床很快变成了湍急的溪流。

After the heavy rain, the ___arroyos quickly turned into rushing streams.

沙漠里的这条干涸河床只有在雨季才会有水流过。

The ___arroyo in the desert only carries water during the rainy season.