It will be a critical test of will, not only in Afghanistan, but in the US and Europe too.

无论是对于阿富汗还是美国和欧洲来说，这都将是一次成败攸关的对意志力的考验。

youdao

This race will be the ultimate test of your skill.

这次竞赛将是对你的技能的最大考验。

《牛津词典》

The homeopath will test various strengths of remedies on the patient.

采用顺势疗法的医生将对病人试验疗法的各种效力。

《柯林斯英汉双解大词典》

Getting through the day has become a test of will.

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The test of that will be twofold: how soon Brazil can cut interest rates (which now start at 40%, while inflation is just 3%) without triggering a fresh run on the real, and whether foreign investors will start to look more favourably at the country.

ECONOMIST: Cracking the Brazil nuts

For example, we agree with Silk that any future devolution of income tax powers is contingent on a period of assignment, reform of the Barnett formula and a referendum to test the will of the Welsh people.

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