Supply chain contract can solve the "bull effect" and "double marginalization" in some degree, improving the whole revenue of the whole chain.

供应链契约可以在很大程度上克服供应链中的“牛鞭效应”和“双边际化效应”，提高供应链的整体效率。

youdao

He also congratulated Red Bull and Vettel on their double victory in the drivers' and constructors' championship.

CNN: Ecclestone F1 era coming to a close - Ferrari chief

With the combined efforts of Webber and double world champion Sebastian Vettel, Red Bull currently hold an imperious lead at the top of the constructors' championship, 64 points ahead of Ferrari, who have failed to finish top since 2008.

CNN: Webber signs one-year Red Bull extension

Also, secular bull markets rarely begin after markets double in four years and are nearing all-time highs.

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