ironclad
Definition
Extremely strong or secure; unable to be broken or altered.
中文 极其强大或牢固；无法被打破或改变。
Example
"She had an ironclad alibi that proved she wasn't at the scene of the crime."
Extremely strong or secure; unable to be broken or altered.
中文 极其强大或牢固；无法被打破或改变。
"She had an ironclad alibi that proved she wasn't at the scene of the crime."