“坦白交待”常见的英文表达是 "make a full confession" 或 "confess fully" 。
"make a full confession" 是一个较为正式、完整的表达，强调完整、彻底地交代事实或罪行。
"confess fully" 相对简洁，意思也是全面、彻底地坦白。
例如：
The suspect finally made a full confession after hours of questioning.（经过数小时的审问，嫌疑人终于坦白交待了。）
He was urged to confess fully about his involvement in the crime.（他被敦促彻底坦白他在这起犯罪中的参与情况。 ）