out of season 
落令,凋谢; 在淡季

The price is so high because lilacs are out of season now.

紫丁香花现已落令,所以售价如此昂贵.

I spend my holiday out of season.
我在淡季度我的假期.
 
 
out of date 
过时的,老式的
everything in her wardrobe must be hopelessly out of date.

她衣橱内所有的东西都一定老掉牙了.
失效的,过期的
your passport is out of date.

您的护照已经失效.