But if the observer shifts position and look "down" the wall, then these lines cease to appear parallel and level with the ground and instead appear to come together as they recede.

但是如果观察者移动一下位置，面对着墙(这时墙就是“俯视”自己)，那么这些线条就不再是和地面平行了，相反，它们好像自己后退了一样合到了一起。

youdao

For both types of backups (whole system and parallel) you will be able to specify the backup level, for instance, if this should be a full or an incremental backup.

对于这两种类型的备份(全系统备份和并行备份)，都可以指定备份级别，例如，如果此备份应该是一个完全备份或增量备份。

youdao

It started way back in JDK 1.5 when Doug Lea and his JSR 166 expert group added their API level support for breaking up an application into tasks that could be executed in parallel.

这起始于jdk 1.5，那时Doug Lea和他的JSR 166专家组添加了API层次支持以将应用分解为多个可以并行执行的任务。

youdao

Burns drew a parallel between driverless cars and the level of disruption that digital photography brought on Kodak (as I have done, separately).

FORBES: How Traditional Automakers Can Still Win Against Google's Driverless Car: Part 5

As the pitch came in, he pulled the bat down, angled it parallel to the ground, and took a level swing a swing very different from the homer-seeking, flailing uppercut that has become standard among current players, who have produced the highest strikeout numbers in baseball history.

NEWYORKER: Artful Dodgers