低头认罪: bend one's head in acknowledgment of one's guilt; admit one's crimes; hang [bow] one's head and admit one's guilt; make a full admission of one's guilt; plead guilty
忏悔: 1.(认识错误、罪过而感到痛心) repent; be penitent 短语和例子我没有什么可忏悔的。 i have nothing to repent of. 那盗贼对他犯过的一切罪恶表示忏悔。the thief expressed penitence for all his past actions.2.[宗教] confess (one's sins) 短语和例子他