wū yán / xià / de / chú yàn / yǐ jīng / zhǎng chū / chì bǎng / kāi shǐ / liàn xí / fēi xíng / le屋檐下的雏燕已经长出翅膀,开始练习飞行了。The swallow chicks under the eaves have grown wings and begun practicing flying.