case at law

例句：

1. 1. The judge decided the case at law.
   法官依法判决了此案。
2. 2.They filed a lawsuit to challenge the decision of the court.
   他们提起了诉讼，挑战法院的决定。
3. 3. The defendant argued that the evidence was insufficient to prove their case at law.
   被告争辩说，证据不足以证明他们的案件在法律上成立。