(1)
〈美〉紧急立法;紧急法令
由于存在紧急情况而制定的法律，依其规定在其通过后、或经签署后立即生效。

(2)紧急市政条例
为维护公共安全、秩序、财产、卫生、道德等而制定的，规定在其通过后立即生效的市政〔municipal〕条例。

• principal, interest, taxes and insurance/PITI
• principal in the first degree
• principal in the second degree
• principalis
• Principalis debet semper excuti antequam perveniatur ad fideijussores.
• Principality of Scotland
• Principality of Wales
• principally engaged
• principal obligation
• principal office
• principal officer or agent
• principal place of business
• Principal Register
• principal residence
• principal trust beneficiary
• principate
• Principia data sequuntur concomitantia.
• Principia probant, non probantur.
• Principiis obsta.
• Principiorum non est ratio.
• principium
• Principium est potissima pars cujusque rei.
• principium et fons
• principle
• principles of law