1. The sunfast fabric ensured that the colors of the curtains wouldn't fade under direct sunlight.
这种逆光纺织品确保了窗帘的颜色在直接阳光下不会褪色。

2. She chose a sunfast swimsuit for her vacation to avoid fading from exposure to the sun.
她选择了一件逆光泳衣，以防止曝晒后褪色。