I have to go to hospital for an operation.

我得去医院动手术。

《牛津词典》

While the original aim was to raise the hull if at all feasible, the operation was not given the go-ahead until January 1982, when all the necessary information was available.

虽然最初的目标是在可行的情况下提高船体，但是直到1982年1月所有必要信息都具备时，这项行动才得到批准。

youdao

Last year, Hitachi began to experiment to extract rare earths from magnets in old computer hard drives, though the company said the project was not expected to go into operation until 2013.

去年，日立就开始试验从旧电脑硬盘的磁体中提取稀土，虽然公司表示这个项目不会在2013年前投入运行。

youdao

The military plan is that we will have to do a rescue operation because now we have to rescue the civilians first, in order to go for the rest of the LTTE cadres hiding in that area,"

VOA: standard.2009.04.06

Professor LUIGI ZINGALES (Economics, University of Chicago): If you got scared, basically had a bad system in place, you got hit by a major shock, you almost sort of got killed, you got a second chance to live, you're not ready to go back to operation as nothing had happened.

NPR: Why Haven't Credit Problems Been Resolved?

Let's go back to Operation Clear Out the Trash.

NPR: Examining the Political Climate in Zimbabwe

Are you hopeful that what you send to the Hill today will answer their questions and allow the operation to go forward?

WHITEHOUSE: Press Briefing