1. The owl swooped down and picked up the mouse in its claws.
    猫头鹰猛扑下去, 用爪子抓起了老鼠。

2. The owl is a nocturnal bird.
    猫头鹰是夜间活动的鸟。

3. Owl is a night flying bird.
    猫头鹰是夜间飞行的鸟。