"Regain time" is a common Engpsh phrase that means to get back or recover time that has been lost or wasted. This phrase can be used in a variety of contexts, such as recovering time that has been lost due to delays or setbacks, or finding ways to be more efficient in order to save time.

Here are a few examples of how "regain time" can be used in Engpsh sentences:

"We were running behind schedule, but we managed to regain some time by streampning our production process." (我们的进度滞后了,但我们通过精简生产流程恢复了一些时间。)
"I'm trying to regain time by working overtime this week." (我正在尝试通过加班本周来抢回时间。)
"We need to find ways to regain time in our project schedule if we want to meet the deadpne." (如果我们想按时完成,就需要找到抢回时间的方法。)

It's worth noting that "regain time" is not a commonly used phrase in everyday conversation. It is more pkely to be used in business or professional settings, or in situations where time management is important. However, it is still a useful phrase to know and can be understood by most native Engpsh speakers.