1. Japanese supermarkets often have "time sales" which refers to when certain items are discounted for a short period of time, like 30 minutes or a couple of hours.2. Hey don't you want to buy the iPhone 2X? I heard there's a big discount on it at the mall right now. Wanna go check it out?3. Wanna buy milk? They are on special today.4. You can get discounted airline tickets online instead of booking through the travel agency.
 discount on specialdiscount 可當作動詞或名詞使用，如例句。They are on special. = 它們現在是特價/打折/優惠價