Nonscheduled
a. 不定期的, 不按计划的
🗣️ 情景例句
She is giving me piano lessons in exchange for her English classes.
我教她英语，她教我弹钢琴。
I'm interested in buying a new car.
我对买一辆新汽车感兴趣。
not as description or reminiscence.
不要靠描述和印象去感觉。