Delegated legislation can, however, be challenged in the courts on the ground that it is ultravires, i. e. that the party to whom the power to make laws has been given has acted beyond his powers.
而委托立法可以在法庭上由于越权而遭到排除，也就是说，接受了制定法律权力的当事方超越了其权力行事。
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Part five is "Restriction to Agency Power". It approaches how agentoperates agency power from the restriction of ultravires agency, self-agency and both side-agency, etc.