The present paper aims to analyze the root of the power that a contract has, and probe into the form of a contract and the legal power that it is short of based on a comparison.

本文拟从契约效力的根源着手分析，从比较法的角度对合同形式及其欠缺的法律效力进行探析。

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The 31-year-old left-hander, who has joined Lancashire on a short-term contract, was in fine form in 2008, scoring 900 runs at an average of 64.28.

BBC: Prince left out of S Africa squad