从本质上讲，这才是决定性的考验。

Essentially, this is the acid test.

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决定性的考验在于是否确有人会买这种产品。

The acid test is whether or not somebody will actually buy the product.

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帕弗瑞说，我认为中国市场是这一问题的决定性考验。

I think the Chinese market is the litmus test for that.

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在那冰冻的路上开车是对我驾驶技术的决定性考验。

Driving on that ice road was the acid test of my skill.

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在那冰冻的路上开车是对我驾驶技术的决定性考验。

Driving on that ice road was the acid test of my skill.

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