n. merchandise that has imperfections; usually sold at a reduced price without the brand name
a. contrary to rule or accepted order or general practice
s. not occurring at expected times
a. (used of the military) not belonging to or engaged in by regular army forces
n. 不规则物, 不合规格之物
a. 不规则的, 不整齐的, 不合法的
1. The train schedule is irregular, so we should check the times carefully.
火车时刻表不规律，所以我们应该仔细查看时间。
2. She has an irregular sleep pattern, which makes her feel tired during the day.
她的睡眠模式不规律，这让她白天感到疲倦。
3. Some verbs in English have irregular forms, like "go" and "went."
英语中有些动词有不规则形式，比如“go”和“went”。