法律行为的无效是指法律按照一定的标准（条件）对于已成立的法律行为进行评价后所得的否定性结论。也就是说，法律行为因不具备生效条件而使得当事人预设的法律后果不能发生。
狭义的无权代理是一种效力未定的法律行为，可能发生代理无效的法律效果，也可能发生代理有效的法律效果；
The former is a kind of legal behavior without specific validity, thus presumably leading to the legal effects of valid agency , as well as those of invalid agency.
就民事法律行为而言，违背公序良俗将导致该行为的无效，并进而引发其它间接后果。
As far as civil law acts are concerned, if they violated the principle of the public order and the fundamental rights, they would be invalid.
我国即将制定的民法典民事法律行为一章中应引入无效法律行为转换。
This is what we call as the conversion of inefficient jural behavior system.
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