Once they had perfected tile process, they kept it a secret, for another thousand years!

一旦他们完善了瓷砖工艺，他们就将其保密，再隐瞒一千年！

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Once it's perfected, you'll be able to chat with a friend using her own Elfoid, and her doll phone's appendages will mimic your movements.

一旦技术成熟，你将可以用你朋友自己的Elfoid和她煲电话粥，而她玩偶电话的附属物会模仿出你的动作。

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Once the technique is perfected, its use will require patients to have a craniotomy, although it isn't yet known how many electrodes would have to be implanted.

一旦这项技术趋于完善，它的应用则需要病人接受开颅术，虽然现在还不清楚需要植入多少个电极。

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Once perfected, the silk will be used for featherweight ballistic vests, medical sutures and artificial ligaments.

FORBES: Charlotte's Goat

Once automatic bill-paying is perfected and smart cards can substitute for cash these institutions will go the way of the dinosaur.

ECONOMIST: Letters

The idea is to work out the kinks of development and manufacturing at once so production can start as soon as the technology is perfected.

FORBES: Total Recall