再考虑一些后勤作业，海底管道修复作业具有一定的挑战性并且成本颇高。

Offshore repairs can also be challenging and costly in terms of logistics.

youdao

这些工作完成后，再调用一组水泵将拱坝与堵塞间的水全部抽干，堤坝抢修工人们就可以进入现场进行堤坝的修复作业了。

That done, a second set of pumps evacuates the gap between the arch and the PLUG, allowing workers access to the site.

youdao

我采用了这一版本，使作业控制起作用，并修复了许多其他错误，然后把我所做的改动发送给布赖恩。

I took that version, made job control work and fixed a number of other bugs, and sent my changes to Brian.

youdao