Septenary
a. 七的, 每七年一次的, 为期七年的\\nn. 七, 七个一组, 七个一套, 为期七年\\n[计] 七进制的
🗣️ 情景例句
Drug dependence should be looked at as a medical issue, not a criminal one.
毒品信赖应该被看成是医学问题，而不是犯罪问题。
On the first day of the new year.
新年的第一天。
She sang perfectly in the hall last night.
她昨晚在大厅唱得非常好。