The main drawback of the DF-31, apart from the shorter range when compared to the DF-31A, is the lack of an off-road capability.

与东风- 31 A相比除了射程短之外，东风- 31的主要缺点在于缺少非公路的机动能力。

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Off-road capability is further improved by optimization of approach and departure angles, coupled with a generous 225-mm ground clearance.

越野能力已进一步改善的方法和离去角的优化，以慷慨的225毫米的离地间隙耦合。

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But although the road-mobile launcher has some off-road capability, it requires solid ground when launching to prevent damage from debris kicked up by the rocket engine.

然而，虽然道路机动发射装置有一定的越野能力，但在发射时也需要有坚实的地面，以防止火箭发动机激起的碎片造成破坏。

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The Cayenne is a good example of success in over-engineering: it offers both the (somewhat) added storage utility of a mid-sized SUV, with the pleasant, roomy interior and higher driving position, combined with an astonishing sports-car like driving dynamic (especially in the S, Turbo, and Turbo S models), and, with proper options, phenomenal off-road capability (just watch the publicity video of a Cayenne Turbo S tearing up the sand dunes outside Dubai).

FORBES: Why Do People Like The Porsche Cayenne?

In automobile terms, it equates to the Toyota Camry in economy, a Lexus in styling, and a Toyota Tacoma in its tough, rough, off-the-road capability.

FORBES: The Most Successful Aircraft Design Gets Even Better