铁案

tiěàn

铁案 — tiěàn

1. an ironclad case; conclusive evidence; an unassailable conclusion

   警方掌握了铁案，嫌疑人无法辩驳。 jǐngfāng zhǎngwò le tiěàn xiányírén wúfǎ biànbó — The police have an ironclad case; the suspect cannot refute it.