You're at the mercy of the schedule, of drivers, of other people slowing the system down, of trains breaking down and backing the system up, and so on.

你要受时刻表、司机还有其他会减慢系统运行的人的摆布，列车有时还会抛锚和后退，等等。

youdao

No logical volume-based or file system backing devices should be exported to the client partition.

不应该把基于逻辑卷或文件系统的后端设备导出到客户机分区。

youdao

If you want to save and restore preferences outside of the system-provided backing storage, you can do so in an XML-formatted document.

如果您想在系统提供的备用存储器之外保存和恢复首选项，您可以在xml格式的文档中执行这些操作。

youdao

You guys are the national champions -- I'm not backing off the fact we need a playoff system.

WHITEHOUSE: President Obama Greets the Gators

Siemens is now backing SeaGen, the first commercial tidal system, deployed at Strangford Lough in Northern Ireland.

BBC: Tidal power gets a stormy birth off coast of Scotland

The Los Angeles public school system is backing off its plan to end so-called social promotion, whereby kids are sent to the next grade even though they are not qualified to be there.

FORBES: Fact and Comment