cered

例句：

1. 1.The sky turned a deep shade of purpleas the sun set.
   太阳落山时，天空变成了深紫色。
2. 2. The leaveson the trees turned yellowbefore they fell.
   树叶在落下之前变黄了。
3. 3. The flowersin the garden were turningred, signaling the arrival ofautumn.
   花园里的花朵开始变红，预示着秋天的到来。