And the fourth requirement, though very detailed, does not tell you what the system must do; instead, it specifies how fast the system must be.

第四条需求虽然非常详细，但并没有告诉你系统必须做什么；它只是规定了系统必须有多快。

youdao

"It will be extremely valuable to be able to tell women how fast their biological clock is ticking," he says.

他说：能够说出女性的生理时钟快要停止了是十分有价值的。

youdao

You can set a pace and it will tell you how fast or slow you are, as you run!

你可以预设速度，并且提醒你跑步速度比预设的快多少还是慢多少。

youdao

If you want to start rebuilding trust: Tell it fast.

FORBES: When is an Apology Effective?

While Cars Land shifts California Adventure into the fast lane, only time will tell if it will save the town (as Lightning McQueen did for Radiator Springs) and turn Disneyland into the world-class destination it aspires to be.

CNN: Can Cars Land revive California Adventure?

You can tell that the processor is fast, but the UI still has a jerky quality to it -- it's not totally fluid.

ENGADGET: Motorola Droid X first (official) hands-on and unboxing! Update: video!