So the Angle is very small, so we should be able to make a perfect prediction about the period.

所以角度很小，因此我们能够，对于这个周期进行，完美预测。

youdao

Weather prediction has never been a perfect science.

天气预报从来都不是一门准确无误的科学。

《柯林斯英汉双解大词典》

They assume that there is some possibility of predicting the consequences of strategic choices (for example, predictions abased on structural market analysis), but no prediction can be perfect.

他们假定存在一些预测战略选择结果的可能性(例如，基于结构化市场分析的预测)，但没有哪种预测是完美的。

youdao

Mr. Guillemot is in the perfect position to make that prediction.

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But the National Weather Service prediction proved almost perfect.

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The sky is still a perfect cloudless blue and the forecasters have dropped their previous prediction of rain by the weekend.

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