Regular servicing guarantees the smooth operation of the engine.

定期维修可保持发动机的顺畅运转。

《牛津词典》

Recommended steps for smooth operation

为了平稳运行推荐的步骤

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Assist every department to maintain smooth operation.

协助各个部门的任何运作。

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We are still trying to restore the mechanics of the geopolitical system to smooth operation in the most difficult conditions.

ECONOMIST: By invitation: Iraq

The Jetpatcher does all this in one smooth operation, then moves on to the next pothole as traffic resumes its path over the newly repaired road.

BBC: Jetpatchers at work

Promote smooth operation of payment systems that link banks.

BBC: EMU fast facts