Therefore, a system tuned by even the most skilled administrator at one point in time may not be optimal at another time.

因此，即使是技术最高超的管理员在某个时候调优过的系统，在另一个时候也未必是最优的。

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On the one hand, a well-tuned WOC system can create an excellent leaderboard.

一方面，一个完美的群体智慧系统可以创造一个好的排名榜。

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Although we say that DRS is "best effort" and sessions might be lost in the event of a failure, the chances of session loss are minimal in a properly tuned system.

尽管我们说DRS是“尽力服务”型，在出现故障时会话可能会丢失，但在经过适当优化的系统中，会话丢失的几率非常小。

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Under Yang, Lenovo fine-tuned a feedback system that shot detailed sales data back to Lenovo executives in Beijing almost daily.

FORBES: Not East or West

And Project SHIELD provides fidelity and dynamic range never before available on a portable device, through its custom, bass reflex, tuned port audio system -- with twice the low-frequency output of high-end laptops.

ENGADGET: NVIDIA unveils Project Shield, a Tegra 4-powered Android gaming handheld

Its distribution system, fine-tuned over decades by Sam Walton, is unequaled in retailing.

FORBES: The Amazon trance