她们每月进行一次聚餐，共同庆祝生日。

They celebrated them together over monthly lunches.

youdao

每月进行一次库存检查。

Inventory Check will be conducted on monthly basis.

youdao

财务部门和采购合同作为审计工作的重点，要每月进行一次。

Financial sector and procurement contracts as the focus of the audit work, and need to audit once a month.

youdao

So this design of having students on campus once a month for intensive classes allows students to continue working full time.

让学生每月来校一次,进行现场教学的设计,允许学生继续全职工作。

哈佛公开课 - 幸福课课程节选