diary

/ˈdaɪəri/

a daily written record of (usually personal) experiences and observations

Chinese meaning: 日记；日志

She writes in her diary every night before going to bed.

她每晚睡觉前都会写日记。

The explorer's diary provided valuable insights into the expedition.

探险家的日记为这次探险提供了宝贵的见解。