其间 qíjiān in between
in between; within that interval; in the meantime
怎么记住“其间”: 其 this or that + 间 room = in between.
汉字
用法
- During that period, or in between - 会议持续三天，其间讨论了多项议题 (huìyì chíxù sān tiān, qíjiān tǎolùnle duō xiàng yìtí) the meeting lasted three days, during which many topics were discussed.
- Literary/written; refers back to a time span just mentioned. Roughly 'in the meantime / within that interval,' not a standalone 'between two objects.'