ephemeretum

例句：

1. 1. The sunset was a beautiful ephemeretum that painted the sky in shades of orange and pink.
   夕阳是一幅美丽的瞬间画，将天空染成了橙色和粉色。
2. 2. The artist captured the ephemeretum of the flower's petals opening to reveal its beauty.
   艺术家捕捉到了花朵绽放的瞬间，展现了其美丽。
3. 3. The ephemeretum of life is short, but it's full of meaning and purpose.
   生命的瞬间很短，但它充满了意义和目的。