In this case, everywhere I specify an OVal constraint, the logic defined in OVal code will be weaved into my code, thus acting like preconditions and postconditions.

在本例中，只要是我指定了OVal约束条件的地方，在OVal代码中定义的逻辑就会编入我的代码，进而充当起前置条件和后置条件。

youdao

Arrival and departure times are set into an oval sculpture that reminds me of E.

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The first bent trumpets were in the shape of a flattened S-curve, but they were soon made obsolete by trumpets whose tubing was fashioned into an elongated oval coil.

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Along with the usual technical imperatives involved in designing an oval movement, this timepiece incorporates the results of fundamental research by Breguet into the acoustics of chiming and repeating watches.

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