In many cases we would like to perform this operation in the background and update or change only a part of the page.

很多情况下，我们都想在后台执行此操作，只更新或改变页面的一部分内容。

youdao

Refreshing of the statistics runs in the background and the alter FRAGMENT command returns immediately after the alter operation is completed.

统计刷新在后台运行，alter FRAGMENT命令在alter操作完成后将立即返回。

youdao

Music: moderate volume of the background music, television normal operation.

音乐：背景音乐音量适中，电视操作正常。

youdao

He usually works with Michael Argenziano, an affable, bearlike man who is chief of adult cardiac surgery. (Oz trained Argenziano, and they have worked together for years.) I hovered in the background, watching the operation on one of the giant monitors suspended from the ceiling.

NEWYORKER: The Operator

Pandit has experience running a complex investment bank, but little background as the chief of a global consumer operation.

FORBES: Citi Swaps Prince For Pandit

After Catania left with her original prints, Operation Photo Rescue veteran Dennis McKeever glued himself to a computer screen, delicately copying snippets of forehead, sections of background, and overlaying them on similar, damaged areas of the wedding photo.

WSJ: Snapshots of Sandy: Group restores victims' photos