这两条道路平行延伸，永远不会相交。

The two roads run ___parallel and never intersect.

这两个项目的发展轨迹有着惊人的相似之处。

The development of these two projects shows striking ___parallels.

他的职业生涯在很多方面都与父亲的成功之路相似。

His career ___parallels his father's path to success in many ways.

这个程序使用并行处理来加快数据计算速度。

This program uses ___parallel processing to speed up data calculations.