xǔ / duō / hòu / niǎo / měi / nián / dōu / huì / fēi / dào / Sān / jiāng / píng / yuán / yuè / dōng

许多候鸟每年都会飞到三江平原越冬。

Many migratory birds fly to the Sanjiang Plain every year to spend the winter.