yóu / yú / shuǐ / yuán / bù / duàn / jiǎn / shǎo / xián / hǎi / de / miàn / jī / céng / dà / fú / suō / xiǎo

由于水源不断减少，咸海的面积曾大幅缩小。

As its water sources steadily diminished, the area of the Aral Sea once shrank dramatically.