英语释义
1. sheathed in iron armor —used especially of naval vessels
2. so firm or secure as to be unbreakable: such as
3. binding
an ironclad oath
4. having no obvious weakness
an ironclad case against the defendant
5. an armored naval vessel especially of the mid to late 19th century
6. not able to be changed
7. too strong to be doubted or questioned