通常工程变更是需要我们确认后才生产的，但是这次交期很紧，只有4天时间。的翻译：Project changes are usually needed only after we confirm that production, but the delivery was very tight, only 4 days. 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

Usually we need to confirm the engineering change after production, but the delivery is very tight, only four days.

Project changes are usually needed only after we confirm that production, but the delivery was very tight, only 4 days.

The usual project change is needs us after to confirm only then produces, but this delivery date is very tight, only then 4 days time.

Usually works only after confirmation is something we need to change the production phase, but this time is very tight, only 4 days.

Project changes are usually needed only after we confirm that production, but the delivery was very tight, only 4 days.