The lady was at the wheel, and her hands were shaking.

妻子坐在轮椅上，她的手在颤抖。

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In theory, there's a law against that kind of thing, passed in order to avoid a lot of killing and maiming, but since Maria Shriver, the state's first lady, has been photographed at the wheel with her mobile phone, it must be all right.

ECONOMIST: A solution to California��s traffic woes