yǔ / jì / kāi / shǐ / hòu / chéng / qún / de / jiǎo / mǎ / xiàng / shuǐ / yuán / yí / dòng

雨季开始后，成群的角马向水源移动。

After the rainy season began, herds of wildebeest moved toward sources of water.