You only need to make these assignments once in the system.

指派只需在系统中操作一次。

youdao

Once in the system, the data are manipulated or change by processes, represented by round-corner rectangles.

数据一进入系统，就被若干进程加工或改变，用。

youdao

Now that he has become president, many people once again have hope for genuine changes in the system.

既然他已成为总统，许多人又一次寄期望于体制的真正改革。

《柯林斯英汉双解大词典》

A recent report shows that the small organ has a much more important job in the body's defense system than once believed.

VOA: special.2009.08.25

Once the gases are mixed, there's not going to be any further net change in the system.

一旦气体混合,这个系统就不会发生任何净的变化。

麻省理工公开课 - 热力学与动力学课程节选

Republican leaders in the U.S.Congress responded to the president's remarks by charging once again that he wants a health care system run by bureaucrats in Washington.

VOA: standard.2009.06.15

He said he never doubted the medical team were capable but once in the system details were scarce.

BBC: Jersey hospital 'needs to clearer cancer information'

Experts said that once in the system, a hacker could gain control of thousands, even millions, of meters and shut them off simultaneously.

CNN: 'Smart Grid' may be vulnerable to hackers

Once enrolled in the system as a potential terror suspect, the older brother was able to travel back to Russia unimpeded by (Department of Homeland Security) or any of our intelligence agencies.

CNN: FBI did its job in Tsarnaev probe, Obama says