cast-iron

名词 cast-iron:

1. an alloy of iron containing so much carbon that it is brittle and so cannot be wrought but must be shaped by casting
   同义词：cast iron

形容词 cast-iron:

1. extremely robust
   同义词：iron

cast-i.ron

adj.（形容词）
Made of cast iron.
铸铁的：用铸铁制成的
Rigid; inflexible:
严格的；不可变更的：
例句：
a cast-iron rule.
严格的规则

Exceptionally strong or resistant:
极顽强的：格外地强健或顽固的：
例句：
a cast-iron stomach.
健康的胃