The workload involves other transactions as well, but these are considered a background load.

工作负载还涉及其它一些事务，但是这些事务被当作后台负载。

youdao

The main source comes from the background load, namely natural background load and upstream contribution load from the upper reaches of the Yangtze River, the Jialing River and the Wujiang River.

污染负荷主要来自长江、嘉陵江、乌江上游的贡献和天然背景负荷。

youdao

Instead, you load new content in the background and then show it within the existing page.

相反，可以在后台加载新的内容并在现有页面中显示它。

youdao

If more horsepower is needed, then the user can quickly switch into the main operating system, which Cloud continues to load in the background.

ECONOMIST: Google goes in search of an instant operating system