made of cast iron 铸铁制的 a cast-iron bridge 铸铁桥
- (British English)
very strong or certain; that cannot be broken or fail 有力的;确实的;坚定不移的 a cast-iron guarantee/promise 永不反悔的保证;铁誓 a cast-iron excuse/alibi 有说服力的辩解;不在犯罪现场的确凿证据
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