在秋季开的

例句：

1. 1. Autumn is a season of change and rejuvenation.
   秋天是一个变化和重生的季节。
2. 2. The leaves on the trees turn from green to yellow during autumn.
   树木上的叶子从绿色变为黄色，这是秋天的特征。
3. 3. We often go for walks in the park during autumn.
   我们经常在秋天去公园散步。