This is the 7507th most frequent Chinese word.
該單
"該單" means "the aforementioned order" or "the specified list/document."
The word "該單" is used as "the mentioned" to specify a particular item.
該單文件需要尽快处理。
The mentioned document needs to be processed promptly.
"該單" refers to "the proposed" in this context as a specific mentioned plan.
該單計劃已提交至審核部門。
The proposed plan has been submitted to the review department.
Here, "該單" is utilized as "the mentioned" referring to the subject's specificity.