The application must be extremely stable with numerous users logged in simultaneously. Speed must not be sacrificed.

应用程序在多个并发用户访问时必须极其稳定，且不能牺牲速度。

youdao

The design was intended for flight at Mach 3, but it proved less than ideal at that speed, and the two aircraft together logged less than 2 hours of Mach 3 flight time.

设计的目的是为在3马赫飞行，但是它证明了在这个速度并不理想，而两架飞机一起记录少于2小时3马赫的飞行时间。

youdao

How do you like the notion that someone somewhere always has the position (and speed) of your car logged?

CNN: Behold the?all-seeing, self-parking, safety-enforcing, networked car