translation.ar: وهي اثناء الليل تقوم بإغلاق اوراقها وتقلل الحركة واثناء النوم تقوم بإعادة فتح الاوراق وتتحرك بكثرة
translation.en: So during the night, they curl the leaves and reduce the movement, and during the day, you have the opening of the leaves -- there is much more movement.