各位网友，本人求论文摘要的英文翻译一份，请英文好的朋友帮帮忙，万分感激！！

As social and economic development, the law also values corresponding changes have taken place, the inherent legal tradition by rigid conservative side began to encourage and guarantee the development of conversion transactions, that is, from the traditional focus on the static property protection to the Dynamic transaction security safeguard. Reflected in the legal provisions, its fundamental thrust of the law is to act in accordance with the lack of entry into force of the nature and seriousness of the elements to determine its effectiveness, its lack of the elements, such as the public good, so that it is null and void only if the私益, so that the avoidable if only procedural gaps, the effect to be determined so that it can be funded to make corrections. Therefore reveals effect to be determined in the contract system in the area of contract law applied to further improve China's Contract Law is of important significance. By analyzing the effectiveness of the contract pending t