cast iron

1. N-UNCOUNT Cast iron is iron which contains a small amount of carbon. It is hard and cannot be bent so it has to be made into objects by casting. 鑄鐵

Made from cast iron, it is finished in graphite enamel. 該物由鑄鐵制成，表面以石墨搪瓷拋光。

2. ADJ A cast-iron guarantee or alibi is one that is absolutely certain to be effective and will not fail you. 確保有效的

They would have to offer cast-iron guarantees to invest in long-term projects. 他們不得不有效確保長期項(xiàng)目的投資。