at each other's throats
US /æt iːtʃ ˈʌðərz θroʊts/
UK /æt iːtʃ ˈʌðərz θroʊts/

1.
争吵不休, 互相攻击
if two people are at each other's throats, they are arguing angrily
:
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The two brothers are always at each other's throats.
两兄弟总是争吵不休。
•
They've been at each other's throats ever since the argument.
自从那次争吵后,他们就一直争吵不休。