the long arm of the law
US /ðə lɔŋ ɑrm əv ðə lɔ/
UK /ðə lɔŋ ɑrm əv ðə lɔ/

1.
法律的铁腕, 法律的广泛影响力
the far-reaching power of the police or legal system
:
•
Criminals may try to hide, but the long arm of the law will eventually catch them.
罪犯可能会试图躲藏,但法律的铁腕最终会抓住他们。
•
Even across borders, the long arm of the law can reach those who commit crimes.
即使跨越国界,法律的铁腕也能触及那些犯罪分子。